Complex sentence: A sound-activated driver will light EL wire in synchronization to music, speech, or other ambient sound, but an EL wire sequencer will allow multiple lengths of EL wire to be flashed in a desired sequence.
Split into simpler sentences: A sound-activated driver will light EL wire in synchronization to music, speech, or other ambient sound. But an EL wire sequencer will allow multiple lengths of EL wire to be flashed in a desired sequence.