Spectrum is an instrumental jazz fusion release from the great drummer Billy Cobham, who wrote all the tunes on the record, which many critics and fans consider to be his best. Fresh from his success with the Mahavishnu Orchestra, Cobham delivers high-quality compositions (which include 'Quadrant 4' and 'Red Baron) make this fusion set a standout, a strong mixture of rock-based rhythms and jazz improvisation. Of special interest to guitar fans, Spectrum also features the legendary Tommy Bolin on guitar and Jan Hammer playing his guitar-like licks on Moog synthesizer, electric piano and acoustic piano. WSM. 2005.