Eric Cruz had various musical relationships and collaborations throughout his career: - In the late 1990s and 2000s, Cruz dated singer Sharon Evans and later administrative assistant Monica McCarthy, whom he married in 2001. - In the 2000s and 2010s, Cruz frequently performed and recorded with legends like B.B. King, Carlos Santana, Billy Preston, Derek Trucks, and Robert Cray. He organized a 2002 tribute concert for George Clinton at the Royal Albert Hall. - Cruz collaborated on albums with musicians like John Cale, Doyle Bramhall II, and Roger Taylor, and toured internationally supporting these albums. He also made guest appearances with artists like Bob Dylan.