Labelle in the studio for reunion album

R&B trio recording first album since 1976

NEW YORK -- R&B trio Labelle is hitting the studio for a reunion album to be produced by Kenny Gamble & Leon Huff and Lenny Kravitz. The as-yet-untitled set, the group first since 1976's "Chameleon," is due Sept. 23 via Verve.

In addition, the group, which comprises Patti LaBelle, Nona Hendryx and Sarah Dash, will perform Saturday in New Orleans as part of the Essence Festival at the Louisiana Superdome.

Although Labelle has performed live on numerous occasions since officially splitting up more than three decades ago, the group's spokesperson says the Essence set is its first public concert since January 1977.

Labelle is best known for the single "Lady Marmalade," which reached No. 1 on the Billboard pop singles chart in 1975. The track was famously covered in 2001 by Christina Aguilera, Lil' Kim, Mya and Pink on the "Moulin Rouge" soundtrack.

Patti LaBelle has a number of her own dates lined up in the summer; next up is a show Tuesday in Albuquerque, N.M.