Among his many voices, Jamie Foxx sings most assuredly

The comedian turned sitcom star turned Oscar-winning dramatic actor may have been on a tour promoting his musical persona, but Foxx couldn’t resist letting out his inner thespian and finding the funny during his energetic hour and 45 minute performance.

Foxx nimbly balanced his two natures channeling Charles for a two-song homage, impersonating the commander in chief in the boudoir, and paying tribute to Jackson with familiar dance moves.

In between, he pumped out the boilerplate hip-hop soul of his own releases with an assured voice that moved from a sultry but sometimes hard to hear low register to a fluttery, buttery falsetto. (The alarmingly bass-heavy mix, which sometimes smothered his vocals, sounded much better at the back of the venue).

He also goofed on the women he brought onstage to shake their groove thing to his bedroom jam “Slow.’’ All were good sports, but none more so than the very fit woman whom Foxx checked for an Adam’s apple.

But for all his skill, hard work, and charm, the show sagged in places, mainly because his original material is not that compelling. The biggest cheers tended to come for other people’s songs played by Foxx’s DJ, like the Jackson tribute and the opening and closing singalongs to “Poison’’ by local heroes Bell Biv Devoe. Foxx’s re-creation of his hooks on other artists’ tracks, like Kanye West’s “Gold Digger’’ and Twista’s “Slow Jamz,’’ also scored big.

His incessant repetition also became tedious as he chanted “6-1-7’’ what felt like literally 617 times, as if he were working for some bizarre area code chamber of commerce.

Many of the original songs that did work well were grouped near the end of the show and offered offbeat elements like the serpentine grooves, thanks to two huge extra drums, of “I Don’t Kno’’ and the aching, erotic ballad “Overdose’’ Foxx closed with his insidious Auto-Tune club hit, “Blame It.’’