Neil Sedaka appears at Eisenhower Park's Lakeside Theatre on Saturday.
The off-Broadway musical about a fundraising talent show presented by the Little Sisters of Hoboken, Thursday and Friday, Sept. 5-6, 8 p.m.; Saturday, Sept. 7, 3 and 8 p.m.; Sunday, Sept. 8, 2 p.m. $55. John W. Engeman Theater, 250 Main St., Northport. (631) 261-2900 or www.engemantheater.com.
I’m Not Rappaport
The bittersweet comedy about a pair of elderly New Yorkers, Friday and Saturday, Sept. 6-7, 8 p.m.; Sunday, Sept. 8, 3 p.m. $20, $17 students and seniors Friday and Sunday. Merrick Theatre & Center for the Arts, 2222 Hewlett Ave., Merrick. 868-6400.
The country singer-songwriter in concert, Friday, Sept. 6, 8 p.m. $39.50 and $29.50. NYCB Theatre at Westbury, 960 Brush Hollow Rd., Westbury. (800) 745-3000 or www.
Charlie Daniels Band
The genre-defying country rocker in concert, with the Marshall Tucker Band, Saturday, Sept. 7, 8 p.m. $49.50. NYCB Theatre at Westbury, 960 Brush Hollow Rd., Westbury. (800) 745-3000 or www.livenation.com.
Church of the Diminishing Marginal Returns
Long Island premiere of a comedy about a financially troubled entrepreneur who starts a church as a way out of his difficulties, Saturday, Sept. 7, 8 p.m.; Sunday, Sept. 8, 2:30 p.m. $20, $18 seniors, $18 students, $15 ages 12 and under; $25 at door. Studio Theatre, 141 S. Wellwood Ave., Lindenhurst. (631) 226-8400 or www.broadhollow.org.
The iconic singer-songwriter in concert, Saturday, Sept. 7, 7 p.m. Eisenhower Park, Lakeside Theatre, East Meadow. 572-0200 or concertline, 572-0223.
Mike DelGuidice and Big Shot
The acclaimed singer-songwriter and his band in a tribute to Billy Joel, with the “Ultimate Billy Joel Experience,” Saturday, Sept. 7, 8 p.m. $20, $5 students. Madison Theatre, Molloy College, 1000 Hempstead Ave., Rockville Centre. 678-5000 ext. 7715 or www.madisontheatreny.org.