Music Technology used by Sometimes includes Multi-tracking, which is the ability to record/process tracks separately, Overdubbing, which is the same musician recording extra tracks to add to existing vocal or guitar tracks, for example, EQ, which is short for equalization, changing the frequency levels across all tracks, Panning, which is different levels coming through the left and right speakers, and Flanger, a studio effect that sounds as if the sound is being squeezed or compressed.