According to the MIDI Manufacturers Association (MMA), the most recognized feature of general MIDI is its predefined list of sounds, or "patches." The word comes from the early days of synthesizers, when physical patch cables were plugged into various sockets to send sound signals through different effects units. Nowadays, the whole process is replicated electronically. The Yamaha MO8 GM voice list is as follows.
1 to 42
The Yamaha MO8 includes a concert grand piano patch.
1 is ConcertGnd. 2 is Rock Brite. 3 is CP 2001. 4 is Honkytonk. 5 is E.Piano 1. 6 is E.Piano 2. 7 is Harpsicord. 8 is Brite Clav. 9 is Celeste. 10 is Glocken. 11 is Music Box. 12 is Vibes. 13 is Marimba. 14 is Xylophone. 15 is TubulrBel. 16 is Dulcimar. 17 is Draw Organ. 18 is Perc Organ. 19 is Rock Organ. 20 is ChurchOrgn. 21 is Reed Organ. 22 is Accordion. 23 is Harmonica. 24 is TangoAccrd. 25 is Velo Nylon. 26 is Steel. 27 is ModernJazz. 28 is Clean. 29 is Mute. 30 is Overdrive. 31 is Distortion. 32 is Harmonics. 33 is Acoustic. 34 is FingerBass. 35 is PickBass. 36 is Fretless. 37 is SimpleSlap. 38 is FingSlp SW. 39 is SynthBass1. 40 is SynthBass2. 41 is Violin 2. 42 is Viola 2.
43 to 85
43 is Cello 2. 44 is ContraBas2. 45 is TremoloStr. 46 is Pizz. 47 is Harp. 48 is Tmpni+Cym. 49 is StereoSt1. 50 is StereoSt2. 51 is Grand Saw. 52 is SynString. 53 is Aah Choir. 54 is Ooh Choir. 55 is Syn Voice. 56 is Orch.Hit. 57 is Trumpet. 58 is Trombone2. 59 is Tuba. 60 is MuteTrpt. 61 is F.Horns. 62 is Brass Sect. 63 is SynthBrass. 64 is SoftBrs GM. 65 is Soprano. 66 is Alto Sax. 67 is TenorSax. 68 is Bari Sax. 69 is Oboe. 70 is Eng.Horn. 71 is Bassoon. 72 is Clarinet 2. 73 is Piccolo. 74 is Flute. 75 is Recorder. 76 is Panflute. 77 is Bottle. 78 is Shakuhachi. 79 is Whistle. 80 is Ocarina. 81 is Square Ld. 82 is Saw Ld. 83 is Caliop Ld. 84 is Chiff Ld. 85 is Charan Ld.
86 to 128
86 is Voice Ld. 87 is Fifth Ld. 88 is Bass&Ld. 89 is New Age. 90 is Warm Pad. 91 is Poly Synth. 92 is Choir Pad. 93 is BowedPad. 94 is Metal Pad. 95 is Halo Pad. 96 is Sweep Pad. 97 is Rain Pad. 98 is SoundTrack. 99 is Crystal. 100 is Atmosphere. 101 is Brightness. 102 is Goblin. 103 is Echoes. 104 is Sci-Fi. 105 is Sitar. 106 is Banjo. 107 is Shamisen. 108 is Koto. 109 is Kalimba. 110 is Bagpipe. 111 is Fiddle. 112 is Shehnai. 113 is Tinkerbel. 114 is Agogo. 115 is Steeldrum. 116 is Woodblock. 117 is Taikodrum. 118 is MelodicTom. 119 is Synth Drum. 120 is Rev Cymbal. 121 is Fret Noise. 122 is BreathNoiz. 123 is Seashore. 124 is Tweet. 125 is Telephone. 126 is Helicopter. 127 is Applause. 128 is Gunshot.
