Goa is essentially "dance-trance" music (and was referred to as "Trance Dance" in its formative years), and as such has an energetic beat, almost always at 4/4 and often going into 16th or 32nd notes. It is also especially noted for switching to a 12/8 beat with the same tempo during some parts of the song. A typical number will generally build up to a much more energetic movement in the second half of the track, and then taper off fairly quickly toward the end. Generally 8-12 minutes long, Goa tracks usually have a noticeably stronger bassline than other trance music and incorporate more organic "squelchy" sounds (sounds put through a resonance filter, thought to sound especially good on psychedelic drugs, the most famous of these being generated by the TB-303).
England & Ireland