SoundDamage (open registrations)
STMusic (open registrations)
SoftMP3 (open registrations)
FileMP3 (open registrations)
MP3nerds (open registrations)
TranceBooster (just with invitation)
VIPMusic (just with invitation)
TranceTraffic (just with invitation)
PureSound - TranceRoute (just with invitation)
OiNK (just with invitation)
BTMusic (just with invitation)
Elektronic.ro (just with invitation)
IndieTorrents (just with invitation)
Those are the most important trackers with music content I guess.
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