Spectrum’s #1 hit single I’ll Be Gone (February 1971) was the final rock song to be played on the once-hip Melbourne radio station 3AK before it took up its format of ‘Beautiful Music’ on 1 June 1973.
Although a creative and exceptional group of musicians, Spectrum’s low earnings forced them to perform live also as The Indelible Murtceps (‘Spectrum’ backwards).
Following the break-up of Spectrum in 1973, leader/guitarist Mike Rudd (pictured) went on to front Ariel, Instant Replay, The Heaters, W.H.Y. and Number 9.
In February 1984, Spectrum re-formed for a successful Australian tour.