Since the release of its 2010 Grammy-nominated, debut album, "Backatown," Trombone Shorty & Orleans Avenue has grown creatively while garnering hordes of new fans.

Since the release of its 2010 Grammy-nominated, debut album, "Backatown," Trombone Shorty & Orleans Avenue has grown creatively while garnering hordes of new fans.

A new album, "For True" (released in September on Verve Forecast), offers proof the band has further refined its signature sound that Troy "Trombone Shorty" Andrews dubs "supafunkrock."

Trombone Shorty & Orleans Avenue will perform at 7 p.m. Sunday, Aug. 26, at the Britt Pavilion, 350 First St., Jacksonville. Reserved seating costs $44, $176 for premium blanket seating for four. Lawn seating is available for $34, $24 for ages 12 and younger.

The band stirs old-school New Orleans jazz, funk and soul laced with hard-rock power chords and hip-hop beats. Tangy, new ingredients have been added as the band pushes the envelope, exploring new musical territory.

Andrews wrote or co-wrote all 14 tracks on "For True" and played trumpet and trombone, along with organ, drums, piano, keys, synth bass and percussion. He played every part on the Latin-tinged tune "Unc," and he also came into his own as a soul singer.

Among those making guest appearances on the new album are Ivan and Cyril Neville, Lenny Kravitz, Jeff Beck, Kid Rock, Ledisi, Warren Haynes, Stanton Moore, Rebirth Brass Band and bounce rapper 5th Ward Weebie.

Andrews hails from the Tremé neighborhood in New Orleans' Sixth Ward, getting his nickname at age 4 when he marched in a street parade wielding a trombone twice as long as he was tall.

For tickets, see www.brittfest.org or call 541-773-6077.