The band's manager Steve Weiss, also an attorney for Led Zeppelin, brought drummer Sandy Gennaro and bassist Jimmy Haslip into the fold to complete the line-up.
In 1980, Bruce Kulick played guitar on Billy Squier's solo debut album, The Tale of the Tape, produced by Eddy Offord of Yes fame.
But, with the disappointing sales of their debut album and a regime change at Polydor, Blackjack were no longer a priority act at the label and Worlds Apart was released in 1980 with very little backing and no tour support from the record company.
In 2004, rapper Kanye West re-recorded a section of "Maybe It's the Power of Love" off Worlds Apart for inclusion on his song "Never Let Me Down"; it was released on his triple platinum selling debut album The College Dropout which peaked at No.
UK-based label Lemon Records would do another 2-for-1 reissue in 2006, titled Anthology, with extensive liner notes by English rock journalist Malcolm Dome.
The most recent re-issues came in December 2013 when both albums were released individually by Universal Music Japan in the cardboard sleeve mini-LP format as SHM-CD remasters.