Spectrum

1 )Spectrum is an Australian progressive rock band that formed in Melbourne in 1969 and, in its original period, remained in existence until 1973. Its members also performed under the alter-ego Indelible Murtceps. They reformed, initially as Spectrum Plays The Blues, in 1999.

Mike Rudd - vocals, guitar, harmonica
Bill Putt - bass
Mark Kennedy - drums
Ray Arnott - drums
Peter ‘Robbo’ Robertson - drums, percussion
Lee Neale - keyboards
John Mills - keyboards
Daryl Roberts - keyboards

2) Spectrum - a British band that was founded by Peter Kember (ex-Spacemen 3) in 1991