Billy Cobham recorded Spectrum in 1973 after working with Miles Davis and during his stint in Mahavishnu Orchestra, and it is a very influential fusion record that features Jan Hammer on keys and Tommy Bolin on guitar. There are a lot of rock elements in the guitar and drums especially, but the album is full of interesting jazz improvisation and it really cooks! Stratus is the best and most famous song on the album, but the rest of the album should not be missed by fusion fans.
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