Complex sentence: It was founded by lead singer Ashleigh Ball, known for her work in many television series as well as being the voice of two characters in the cult show, Dave Vertesi (backup vocalist and bass), and David Beckingham (backup vocalist and guitarist).
Split into simpler sentences: It was founded by lead singer Ashleigh Ball, known for her voiceover work. Other members incude Dave Vertesi (backup vocalist and bass), and David Beckingham (backup vocalist and guitarist).