This week's coming attractions - Pittsburgh Tribune-Review

Pianist and keyboardist Rachel Z has pushed aside her funky-smooth jazz-pop history and is concentrating on the music she loves: sound shaped by Miles Davis, John Coltrane and Wayne Shorter. Her trio will provide a chance to judge how well it is doing that Saturday at Gullifty's in Squirrel Hill. Music begins 9:30 p.

m. Admission is $15. Country singers Tracy Lawrence and Mark Wills will team up for a concert Saturday at the Pepsi-Cola Roadhouse in Burgettstown.

Lawrence released his latest album, "For the Love," in January. Wills scored a No. 1 hit, "Nineteen Somethin'," in 2003 and has had eight Billboard Top Tens.

Doors open at 5:30 p.m. for the dinner show, and the concert begins at 6:30 p.

m. Tickets cost $59-$79. A Chinese author in a crisis of conscience finds inspiration in the writing of Pittsburgh native Gertrude Stein in "RedDust," the "Opera electronica" by Matthew Rosenblum that receives its world premiere by Opera Theater next weekend at The Andy Warhol Museum.

Rosenblum's score mixes acoustic and electronic music, and will accompanied by video art by Kurt Ralske. The five characters will be performed by singers Kelvin Chen, Jo Ellen Miller and Anna Singer, and Attack Theatre dancers Michelle de la Reza and Peter Kope, who choreographed their dramatic roles. Performances start at 8 p.

m. Friday and Saturday, and 3 p.m.

May 20, at The Andy Warhol Museum, North Side. Admission is $25 general admission, $35 for patron seating. "Shrek the Third," the next installment of the story of the giant green ogre and his princess wife, opens Friday.

Mike Myers, Cameron Diaz, Eddie Murphy and Antonio Banderas are back in their roles as the royal couple, Donkey and Puss In Boots. Justin Timberlake joins the cast as another of the royals. He's won 13 Grammys, wowed Gen X audiences when he played with the Red Hot Chili Peppers, and Frank Sinatra called him "the best singer in the business.

" Tony Bennett performs at 8 p.m. Monday at Heinz Hall, Sixth Street and Penn Avenue, Downtown.

Tickets are $65.50-$125.50.

412-392-4900.