Distribution of BRR waveforms as determined by Snessor95:

0BE22A to 0C01FF = Sound 8,149kb   = Three samples
0CF817 to 0D01FF = Sound/music     = No samples!
0EFA06 to 0F01FF = Sound/music     = No samples!
0FF4B5 to 1001FF = Sound/music     = No samples!
10E1B4 to 1101A7 = Sound 8,179kb   = Three samples
18F8B7 to 1901FF = Sound/music     = No samples!
19FE18 to 1A01FF = Sound/music     = No samples!
1AFD07 to 1B01FF = Sound/music     = No samples!
1BF4EB to 1C01FF = Sound 3,348kb   = No samples!
1CE237 to 1D01FF = Sound 8,136kb   = Two samples
1E00CE to 1E01FF = Sound/music     = No samples!
1EFEDD to 1F01FF = Sound/music     = No samples!
1FEE46 to 2001FF = Sound 5,049kb   = No samples!
20EF03 to 2101FF = Sound 4,860kb   = Two samples
21F781 to 2E93FF = Sound 826,494kb = One hundred ninety seven samples!!!

What follows is attempted documentation of the sound samples available to
us through SNESSOR95.  This should in no way be taken to be a wholly
accurate account of the data, as descriptions are rather vague and the
software used to achieve these results can not be entirely trusted -
the DOS version of SNESSOR reveals different numbers of samples in most
of the blocks, although those do not carry any seemingly valid sound
information.  This should be taken as more a general guide to where
specific sounds lie in the ROM.  Hopefully it will be updated as time
goes on and our knowledge of music in EarthBound expands.

0BE22A to 0C01FF = Sound 8,149kb   = Three samples
 1)   Unidentified (Percussive crash)
 2)   Unidentified (Electric hum)
 3)   Unidentified (Buzzy hum)

10E1B4 to 1101A7 = Sound 8,179kb   = Three samples
 1)   Unidentified (Low-pitched thrum, click)
 2)   Unidentified (Strummed string)
 3)   Unidentified (Percussive knock)

1CE237 to 1D01FF = Sound 8,136kb   = Two samples
 1)   Unidentified (Pizzicato string)
 2)   Unidentified (Clicks, guitar sound)

20EF03 to 2101FF = Sound 4,860kb   = Two samples
 1)   Unidentified (Low-pitched thrum)
 2)   Unidentified (Low-pitched electric hum)

21F781 to 2E93FF = Sound 826,494kb = One hundred ninety seven samples!!!
 1)   Unidentified (Continuous brassy note)
 2)   Unidentified (Percussive crack)
 3)   Unidentified (Strummed string)
 4)   Unidentified (Truncated low brass note)
 5)   Unidentified (Truncated very low brass note)
 6)   Unidentified (Cymbal/gong tap)
 7)   Vocal sample: "I Miss You" (Credit: Unknown)
 8)   Unidentified (Percussive thump)
 9)   Unidentified (Percussive crash)
 10)  Sound effect: Camera shutter click
 11)  Unidentified (Thrumming electronic noise)
 12)  Sound effect: Static noise
 13)  Unidentified (Vocal wailing - potential Giygas excerpt?)
 14)  Music sample: Opening guitar from Gas Station (Credit: M.D. Seeger)
 15)  Unidentified (Throbbing electric pulse)
 16)  Unidentified (Percussive crack)
 17)  Music sample: Excerpt from The Liberty Bell March (Credit: J.P. Souza)
 18)  Unidentified: (Vocal mumbling?  Sound effect from naming setup?)
 19)  Unidentified (Percussive thump)
 20)  Vocal sample: "OK desu ka" (Credit: Shigesato Itoi)
 21)  Vocal sample: "WOW!" (Credit: Unknown)
 22)  Unidentified (Low-volume percussive thump)
 23)  Unidentified (Brassy/wind sound, very short)
 24)  Unidentified (Wooshing, grinding noise - helpful description, no?)
 25)  Unidentified (Guitar strum)
 26)  Unidentified (Electric hum)
 27)  Unidentified (Two successive thumps - heartbeat sound?)
 28)  Unidentified (Low-pitched wooshing sound)
 29)  Unidentified (Percussive crash)
 30)  Unidentified (High-pitched beep)
 31)  Unidentified (Asian-style percussive instruments?)
 32)  Unidentified (Percussive thump)
 33)  Unidentified (Bell noise)
 34)  Unidentified (Very low brassy noise)
 35)  Unidentified (Nearly indescribable "bloingt" noise)
 36)  Unidentified (Synthetic-sounding beep - lots of reverb)
 37)  Unidentified (Low brassy noise)
 38)  Unidentified (Percussive crash)
 39)  Unidentified (Cymbal crash)
 40)  Unidentified (Light percussive thump)
 41)  Unidentified (Sustained brassy note)
 42)  Unidentified (Low percussive rumble)
 43)  Unidentified (Louder percussive rumble)
 44)  Unidentified (Loud static burst)
 45)  Sound effect: Single footstep
 46)  Unidentified (Loud percussive thump)
 47)  Unidentified (Wooden clattering noise - roulette wheel? :P)
 48)  Unidentified (Metallic percussive noise)
 49)  Unidentified (Low brassy moan)
 50)  Unidentified (Incredibly low rumbling noise)
 51)  Unidentified (Industrial clockwork noise)
 52)  Unidentified (Tuning strings noise)
 53)  Unidentified (Cartoony, wiggly almost-vocal noise)
 54)  Sound effect: Birds, sea sounds (Summers bgm track)
 55)  Unidentified (Truncated brass blip)
 56)  Sound effect: Closing door
 57)  Unidentified (Soft string strum)
 58)  Unidentified (Very low string noise)
 59)  Unidentified (Percussive crash)
 60)  Sound effect: Bicycle bell
 61)  Unidentified (Sustained electric note)
 62)  Unidentified (Metallic percussive noise)
 63)  Unidentified (Short bleep)
 64)  Unidentified (Soft percussive thump)
 65)  Unidentified (Percussive gong noise)
 66)  Unidentified (Deep percussive sound)
 67)  Unidentified (Rattling bell noise)
 68)  Unidentified (Sustained low brass note)
 69)  Unidentified (Metallic percussive crash)
 70)  Unidentified (Sustained electronic hum)
 71)  Unidentified (Clanking rattle noise)
 72)  Unidentified (Ethereal wooshing noise - Second Step Back?)
 73)  Unidentified (Clanking rattle, virtually the same as #71)
 74)  Unidentified (Woosh of wind)
 75)  Unidentified (Sustained electric warble)
 76)  Unidentified (Very short beep)
 77)  Sound effect: Closing door
 78)  Sound effect: Single footstep
 79)  Unidentified (High metallic percussive crash)
 80)  Unidentified (Explosion noise, like cannon fire)
 81)  Sound effect: Synthesized warbling - Giygas Phases 2 and 3
 82)  Sound effect: Closing door
 83)  Sound effect: Single footstep
 84)  Unidentified (Short hum, followed by garbled noise)
 85)  Sound effect: Sustained electric hum - Giygas death
 86)  Unidentified (Deep static rumble)
 87)  Unidentified (Happy little bloing)
 88)  Sound effect: Cash register "Ka-CHING"
 89)  Sound effect: Closing door
 90)  Sound effect: Single footstep
 91)  Unidentified (Strummed string)
 92)  Unidentified (Bongo drum)
 93)  Unidentified (Synthesized thrum)
 94)  Unidentified (Strummed string)
 95)  Unidentified (High-pitched wheep)
 96)  Unidentified (Bloopy noise)
 97)  Unidentified (Low-pitched string strum)
 98)  Sound effect: Closing door
 99)  Sound effect: Single footstep
 100) Unidentified (Synthesized bell sound)
 101) Unidentified (Strummed string)
 102) Unidentified (Ethereal percussive crash)
 103) Unidentified (Soft percussive thump)
 104) Sound effect: Closing door
 105) Unidentified (Soft thumping sound)
 106) Unidentified (Loud percussive crash)
 107) Unidentified (Short clink)
 108) Unidentified (Sustained electric warble)
 109) Unidentified (Brassy horn)
 110) Unidentified (Sustained percussive thump)
 111) Unidentified (Sustained percussive thump, higher)
 112) Unidentified (Loud guitar strum)
 113) Unidentified (Short electric note)
 114) Unidentified (Percussive snap)
 115) Unidentified (Metallic percussive clang)
 116) Unidentified (Brass section, single note)
 117) Unidentified (Single brassy note)
 118) Unidentified (Low, short brass note)
 119) Unidentified (Truncated cymbal crash)
 120) Unidentified (Abrasive electric guitar note)
 121) Unidentified (Percussive snap)
 122) Unidentified (Cymbal crash)
 123) Unidentified (Percussive thump)
 124) Unidentified (Very-low-pitch warble)
 125) Unidentified (Wooden percussive thump)
 126) Sound effect: Closing door
 127) Unidentified (Soft sustained warble)
 128) Unidentified (Sustained electronic warble)
 129) Unidentified (Short electronic melody with static disruption - Giygas?)
 130) Unidentified (Wooden swishing noise)
 131) Unidentified (Soft percussive thump)
 132) Unidentified (Wooden percussive thump)
 133) Unidentified (Low bass thrum)
 134) Unidentified (Very low percussive thump)
 135) Unidentified (Warbling guitar modulated chord)
 136) Unidentified (Industrial warbling noise)
 137) Sound effect: Closing door
 138) Sound effect: Single footstep
 139) Unidentified (Soft percussive thump)
 140) Unidentified (Loud metallic crash)
 141) Unidentified (Loud strummed string)
 142) Unidentified (Soft, low plucked string)
 143) Unidentified (Sustained brassy/electric note)
 144) Unidentified (Thump noise)
 145) Unidentified (Twangy thump noise)
 146) Music sample: Generic victrola music (Hotel bgm sample)
 147) Unidentified (Truncated guitar strum)
 148) Sound effect: Closing door
 149) Unidentified (Wooden percussive bang)
 150) Unidentified (Low-key plucked string)
 151) Unidentified (High-pitched truncated note - like 1/2 second of a choir)
 152) Music sample: Unmodulated brass melody (Cave of the Past)
 153) Vocal sample: Venus' singing voice, single note (Credit: Etsuko Kawano)
 154) Sound effect: Closing door
 155) Unidentified (Metallic percussive clang)
 156) Unidentified (Truncated brass note)
 157) Unidentified (Wooden percussive thump)
 158) Sound effect: Camera shutter click
 159) Unidentified (Sustained brass note)
 160) Unidentified (Soft percussive thump)
 161) Unidentified (Sythesized bell tone)
 162) Unidentified (Percussive snap)
 163) Music sample: Burbling river sound (Peaceful Rest Valley bgm sample, et al)
 164) Unidentified (Sustained percussive crash)
 165) Unidentified (Percussive crash)
 166) Unidentified (Single beep)
 167) Sound effect: Closing door
 168) Unidentified (Sustained soft string note)
 169) Unidentified (Truncated brass note)
 170) Unidentified (Shorter truncated brass note)
 171) Sound effect: Bird chirp
 172) Unidentified (Soft percussive thump)
 173) Unidentified (Loud percussive crash)
 174) Sound effect: Telephone bleep
 175) Music sample: Ambient techno (Moonside bgm sample)
 176) Sound effect: Closing door
 177) Unidentified (Sustained plucked string)
 178) Unidentified (Warbling brass note)
 179) Unidentified (Very short pizzicato string note)
 180) Unidentified (Short percussive note - xylophone?)
 181) Unidentified (Percussive crash)
 182) Sound effect: Cash register sound
 183) Sound effect: Knocking on door
 184) Sound effect: Single footstep
 185) Unidentified (Truncated electronic note)
 186) Unidentified (Short plucked string note)
 187) Unidentified (High-pitched beep note)
 188) Unidentified (Sputtering engine sound?)
 189) Unidentified (Percussive thump like a dull bell)
 190) Unidentified (Metallic percussive clink)
 191) Unidentified (Single plucked string note)
 192) Unidentified (Short, low electronic note)
 193) Sound effect: Drill noise
 194) Unidentified (Growling noise, or maybe a saw blade?)
 195) Unidentified (Single guitar note)
 196) Sound effect: Bulldozer engine, low tone?
 197) Sound effect: Bulldozer engine, high tone