He is a member of the New Orleans–based jazz group Astral Project with Johnny Vidacovich, Tony Dagradi, and Steve Masakowski.

He has recorded with Chet Baker, Alvin "Red" Tyler, James Booker, Johnny "Tan Canary" Adams, Charlie Rich and Zachary Richard among others.

He produced Astral Project's Elvado which won OffBeat magazine's 1998 Best Modern Jazz Album of the year award.

Although Elvado has been described as "straight-ahead bop-influenced jazz with a Crescent City ambiance"[2] Astral Project's live performances are also known for improvisation which Singleton has described as "composing in the groove.

In 2008 various projects included an experimental jazz string quartet composed of two former Louisiana Philharmonic Orchestra members Dave Rebeck and Matt Rhody as well as cellist Helen Gillet.