Medeski Martin & Wood, the jazz-organ trio who have crossed over to the rock 'n' roll world with great success, are returning to their acoustic roots.

Tonic, due from Blue Note records April 25, was recorded live at the New York club of the same name last year, and features keyboardist John Medeski drummer Billy Martin and bassist Chris Wood swinging hard on acoustic instruments. The group plays originals and covers such as Duke Ellington's "Afrique," John Coltrane's "Your Lady" and Bud Powell's "Buster Rides Again."

The group plays the Angel Orensanz Center for the Arts in New York from April 12–16 to celebrate the release, then goes on a two-month acoustic tour, except for a few dates that are electric.

The group's 1996 album Shack Man includes the track "Think" (RealAudio excerpt).

Medeski Martin & Wood tour dates:

April 12–16; New York, N.Y.; Angel Orensanz Center for the Arts

April 22; Auburn, Ala.; Auburn University Amphitheater

April 29; Geneva, N.Y.; Smith Opera House

May 1; Washington, D.C.; 9:30 Club

May 3; Atlanta, Ga; Roxy Theater

May 6; New Orleans, La; Saenger Theatre

May 7; New Orleans, La; Cajun Queen Riverboat, Poydras Street Wharf

June 17; Indianapolis, Ind.; Indy Jazz Fest

August 6; Vienna, Va.; Wolf Trap Filene Center