• MUSIC

Sing Out for Seeger, a celebration of the life and music of Pete Seeger featuring various performers “in the round” playing Pete’s hits and some of their own; Phil Hoose, Will Mallett, Meghan Yates, members of Tumbling Bones and many others. Free. One Longfellow Square, 181 State St., Portland. www.onelongfellowsquare.com. Community potluck at 5:30, music at 7 p.m. Thursday.

The Affordable Poolboys, Jim O’Neil and Dana Pearson, classic rock originals and covers. Elements: Books Coffee Beer, 265 Main St., Biddeford. elementsbookscoffeebeer.com. 7 p.m. Friday.

Mardi Gras Party with The Crawdaddies, Louisiana cajun, zydeco and blues, $20 in advance, $25 day of show. Samoset Resort, 220 Warrenton St., Rockport. 7 p.m. Friday.

Jason Robinson’s Janus Ensemble, saxophonist and composer plays songs from “Resonant Geographies,” $10 advance, $15 day of show. Woodfords Congregational Church, 202 Woodford St., Portland. 8 p.m. Friday.

Rob Schreiber’s Standard Issue, classic jazz from the Great American Songbook. Portland Marriott, Running Hill Road, South Portland. http://bit.ly/1cWWhHp. 6:30 p.m. Friday.

October Road, acoustic Americana folk-rock duo. Elements: Books Coffee Beer, 265 Main St., Biddeford. elementsbookscoffeebeer.com. 1 p.m. Saturday.

Brian Callaghan, classical guitar, jazz and pop. Elements: Books Coffee Beer, 265 Main St., Biddeford. elementsbookscoffeebeer.com. 1 p.m. Sunday.

4th Sunday Damariscotta Area Sacred Harp Singing, free participatory event, not a performance. There will be a potluck supper following the singing, so please bring a dish to share. Free. Home of Corrone and Ruth Ann Bryant, 552 Main St., Damariscotta. 2 to 5 p.m. Sunday.

Dopapod, with Lespecial, electronic, jam, metal, groove, funk and soul, $12 in advance; $15 day of show; 18-plus. Port City Music Hall, 504 Congress St., Portland. www.portcitymusichall.com. 9 p.m. Tuesday.

The Maine Acoustic Festival presents a benefit concert by four student groups, New Roots featuring Flight 317, The Royal River Honey Badgers, The Franklin County Fiddlers and The Johnny Beasts. $15, $10 children. First Parish Congregational Church, 116 Main St., Yarmouth. 7 p.m. Wednesday.

Bob Weir and Ratdog, the State Theatre, 609 Congress St., Portland. $45 advance, $50 door. www.statetheatreportland.com. 8 p.m. Wednesday.

R&R, Ronda Dale & Rob Babson, vintage country, contemporary folk, R&B, blues, Dogfish Bar and Grille, 128 Free St., Portland. www.thedogfishcompany.com. 8 p.m. Feb. 27.

Iration, alternative/reggae, with The Movement and Natural Vibrations, $18 advance, $20 door, $25 preferred seating, all ages. Port City Music Hall, 504 Congress St., Portland. www.portcitymusichall.com. 9 p.m. Feb. 27.

• NIGHTCLUBS

Octane, jazz and swing, no cover; 21-plus Gingko Blue, 455 Fore St., Portland. gingkoblue.com. 8 p.m. Thursday.

’90s Night with Connor & Spencer McGrath, 21-plus. Slainte, 24 Preble St., Portland. slaintewinebar.com. 10 p.m. Thursday.

Blue Steel Express, blues, 21-plus. Gingko Blue, 455 Fore St., Portland. gingkoblue.com. 8 p.m. Friday.

Travis James Humphrey and the Retro Rockets, blues and swing with classics and originals, 21-plus. Gingko Blue, 455 Fore St., Portland. gingkoblue.com. 9 p.m. Saturday.

Karaoke with DJ Ponyfarm, 21-plus, Slainte, 24 Preble St., Portland. www.slaintewinebar.com. 9 p.m. Tuesday.

Jennifer Porter, award-winning musician will sing standards from the ’20s to the ’40s along with some favorite blues tunes. Gingko Blue, 455 Fore St., Portland. www.gingkoblue.com. 7 p.m. Wednesday.

Open mic with Nick Poulin, 21-plus, Slainte, 24 Preble St., Portland. www.slaintewinebar.com. 8 p.m. Wednesday.

Julie Thompson, soulful songstress delivers standards in a fresh way, no cover; 21-plus. Gingko Blue, 455 Fore St., Portland. www.gingkoblue.com. 8 p.m. Feb. 27.

’90s Night with Connor & Spencer McGrath, 21-plus. Slainte, 24 Preble St., Portland. www.slaintewinebar.com. 10 p.m. Feb. 27.

• COMEDY

The Portland Comedy Showcase, featuring some of New England’s brightest stand-up comedians, $5, Bull Feeney’s, 375 Fore St., Portland. www.facebook.com/BullFeeney. 8 p.m. Wednesday.

Comedy on the Square, Gorham’s monthly comedy club, hosted by comedian Brian Brinegar, featuring Dennis Fogg, Erik Gunderson, Will Green and Cloud Morris. $5, 21-plus. Spire 29, 29 School St. www.spire29.com. 7:30 p.m. Feb. 27.