Complex sentence: He formed his own group, Lynn Taitt and the Comets in 1964, but rose to greater prominence in 1966 after starting a second band, Lynn Taitt and the Jets, and this latter group became the premier studio band of the rocksteady era.
Split into simpler sentences: He formed his first combo, Lynn Taitt and the Comets, in 1964, but rose to greater prominence in 1966 after starting a second band, Lynn Taitt and the Jets. This latter group became the premier studio band of the rocksteady era.