In 1989, he released his last studio album "New Green Clear Blue", an instrumental new age-styled album. In January 1990, a cover version of "Instant Replay" recorded by the British duo Yell! became a top 10 hit. Also, in 1990, he co-wrote with longtime collaborator Charlie Midnight "9.95" (performed by Spunkadelic) for '. In 1991, Hartman recorded "(That's Your) Consciousness" for the to '. Also, during the same year, Paul Young featured a cover version of "I'm Only Foolin' Myself" on his compilation album "From Time to Time – The Singles Collection." Additionally, in 1991, Marc Anthony covered the song "Name of the Game" (featured on Hartman's "I Can Dream About You" album) on his collaboration album with Little Louie Vega entitled "When the Night Is Over".