Complex sentence: The first two bands were The Vegas Kings (1957-1958), and Ronnie & The Rumblers (1958), with similar band members, except for the departure of former singer Billy De Wolf and sax player Jack Musci.
Split into simpler sentences: The first two bands were The Vegas Kings (1957-1958), and Ronnie & The Rumblers (1958). The members of each of these three bands were the same, with the exceptions of the departure of former singer Billy De Wolf and sax player Jack Musci.