Bands:
Clinic,
Balanescu Quartet,
Apples in Stereo,
Frank Tovey/Fad Gadget


............lengths of various 4/4 beat loops:
120BPM=2 seconds
129BPM=1.86 seconds
145BPM=1.66 seconds

............Formula for calculating BPM:
60seconds / length of the loop X number of beats = BPM

............eg:
60/2 seconds loop X 4 beats = 120BPM