Cheryl Wheeler and Bill Harley are two of the region’s best singer-songwriters, and Rick Brooks from the ACLU says they’ve never shared a stage before, which frankly is a little hard to believe, but it actually doesn’t matter — this is a rare opportunity either way you slice it. The program is called “An Evening of Dangerous Songs,” and you know those two are capable of them — Harley, from Seekonk, is obviously best known as a children’s performer, but his First Bird Call album for adults from earlier this year hit hard, and he slips a little something in with the funny even when he’s playing for kids. Meanwhile, Cheryl Wheeler is Cheryl Wheeler, and that should be enough, as the Swansea resident can break your heart with a tribute to a father or split your sides with a riff on porta-johns. Don’t miss this.

An Evening of Dangerous Songs is at the First Unitarian Church, One Benevolent St., Providence, Thursday at 7 p.m. The show is part of the Rhode Island American Civil Liberties Union’s 50th-anniversary celebration, and all proceeds benefit RIACLU. Tickets are $25 and are available at the door or at www.riaclu.org.

Hank Williams III can move from the fleet-fingered country that carries on in the tradition of his namesake grandfather, and then take the stage with his band Assjack and blow your face off with a Pantera-style combination of metal and hardcore. He’s at Lupo’s Heartbreak Hotel, 79 Washington St., Providence, Friday night at 9. Tickets are $20 in advance, $22 the day of the show. Call (401) 331-5876 or go to www.etix.com.

Daryl Sherman lives it large in New York these days, but she makes it back to Woonsocket a couple of times a year, and she’s still one of the great old-school jazz singers, as you can find out for yourself at Chan’s, 267 Main St., Woonsocket, Sunday at 7. Tickets are $12; call (401) 765-1900.

— Rick Massimo