Genre is a one-byte numeric field that, until WinAmp, could have one of the following 80 values:
0 'Blues' 20 'Alternative' 40 'AlternRock' 60 'Top 40'
1 'Classic Rock' 21 'Ska' 41 'Bass' 61 'Christian Rap'
2 'Country' 22 'Death Metal' 42 'Soul' 62 'Pop/Funk'
3 'Dance' 23 'Pranks' 43 'Punk' 63 'Jungle'
4 'Disco' 24 'Soundtrack' 44 'Space' 64 'Native American'
5 'Funk' 25 'Euro-Techno' 45 'Meditative' 65 'Cabaret'
6 'Grunge' 26 'Ambient' 46 'Instrumental Pop' 66 'New Wave'
7 'Hip-Hop' 27 'Trip-Hop' 47 'Instrumental Rock' 67 'Psychadelic'
8 'Jazz' 28 'Vocal' 48 'Ethnic' 68 'Rave'
9 'Metal' 29 'Jazz+Funk' 49 'Gothic' 69 'Showtunes'
10 'New Age' 30 'Fusion' 50 'Darkwave' 70 'Trailer'
11 'Oldies' 31 'Trance' 51 'Techno-Industrial' 71 'Lo-Fi'
12 'Other' 32 'Classical' 52 'Electronic' 72 'Tribal'
13 'Pop' 33 'Instrumental' 53 'Pop-Folk' 73 'Acid Punk'
14 'R&B' 34 'Acid' 54 'Eurodance' 74 'Acid Jazz'
15 'Rap' 35 'House' 55 'Dream' 75 'Polka'
16 'Reggae' 36 'Game' 56 'Southern Rock' 76 'Retro'
17 'Rock' 37 'Sound Clip' 57 'Comedy' 77 'Musical'
18 'Techno' 38 'Gospel' 58 'Cult' 78 'Rock & Roll'
19 'Industrial' 39 'Noise' 59 'Gangsta' 79 'Hard Rock'
WinAmp suggested and expanded this table with next additional codes:
80 'Folk' 92 'Progressive Rock' 104 'Chamber Music' 116 'Ballad'
81 'Folk-Rock' 93 'Psychedelic Rock' 105 'Sonata' 117 'Poweer Ballad'
82 'National Folk' 94 'Symphonic Rock' 106 'Symphony' 118 'Rhytmic Soul'
83 'Swing' 95 'Slow Rock' 107 'Booty Brass' 119 'Freestyle'
84 'Fast Fusion' 96 'Big Band' 108 'Primus' 120 'Duet'
85 'Bebob' 97 'Chorus' 109 'Porn Groove' 121 'Punk Rock'
86 'Latin' 98 'Easy Listening' 110 'Satire' 122 'Drum Solo'
87 'Revival' 99 'Acoustic' 111 'Slow Jam' 123 'A Capela'
88 'Celtic' 100 'Humour' 112 'Club' 124 'Euro-House'
89 'Bluegrass' 101 'Speech' 113 'Tango' 125 'Dance Hall'
90 'Avantgarde' 102 'Chanson' 114 'Samba'    
91 'Gothic Rock' 103 'Opera' 115 'Folklore'    
In the words of the Standard, "Any other value should be considered as 'Unknown'"