Ritmo Caché The college’s Latin band plays salsa, Afro-Cuban, jazz, pop, bossa nova, merengue and tejano. 6:45 p.m. College of Southern Maryland, Prince Frederick campus, 115 J.W. Williams Rd., Prince Frederick. 443-550-6000. www.csmd.edu/arts. Free.
Natty Beaux The “finger-snappin’, head boppin’ ” combo performs big band and swing music in an outdoor concert. 7-8:30 p.m. Watkins Regional Park, 301 Watkins Park Dr., Upper Marlboro. 301-699-2456. www.pgparks.com. Free.
Skip Mahoney and the Casuals Formed in 1965, this R&B/soul group will perform its greatest hits. 7 p.m. Blue Dolphin, 1166 Route 3, Gambrills. 410-721-9081. www.theashleighgroup.com. $30.
Thad Wilson and Kindred Soul The local trumpeter/composer performs with his five-piece band. 7 p.m. Joe’s Movement Emporium, 3309 Bunker Hill Rd., Mount Rainier. 301-699-1819. www.joesmovement.org. $10.
“The Mousetrap” Parlor Room Theater presents Agatha Christie’s classic murder mystery about a newlywed couple that opens a guest house in the country that is the scene of a murder. Thursday-Saturday at 7:30 p.m., Sunday at 2 p.m., closes Aug. 4 at 7:30 p.m. Bishop McNamara High School, 6800 Marlboro Pike, Forestville. 202-340-8623. www.parlorroomtheater.com. $10.
“The Tale of the Allergist’s Wife” The Bowie Community Theatre presents stories of a high-society doctor’s wife whose world is shaken when an old childhood friend suddenly reappears. Thursday-Saturday at 8 p.m. Bowie Playhouse, 16500 White Marsh Park Dr., Bowie. 301-805-0219. www.bctheatre.com. $20, seniors and students $15.
Gridloc Band The soul band performs a variety of music. Must be 21 or older. 8 p.m.-midnight Miss Motley’s Cafe, 9501 Crain Hwy., Bel Alton. 301-392-9794. www.belaltonalumnicdc.org. $12.
Sendy Brown The Washington area jazz vocalist performs at the outdoor Wind Down Thursdays concert series. 6:30-8:30 p.m. The Boulevard at the Capital Centre, Capital Centre Boulevard and Arena Drive, Largo. 301-324-0514. www.shopcapcentre.com. Free.
“Tidewater Archaeology Days” A guided exploration of various Colonial sites and a tour of the archaeology laboratory. Friday-Saturday at 10 a.m.-4 p.m. Historic St. Mary’s City, 18751 Hogaboom Lane, St. Mary's City. 240-895-4990. www.stmaryscity.org. $10, seniors $9, students $6, age 5 and younger free.
“Sure Thing” and “The Actor’s Nightmare” Two one-act, kid-friendly plays will be staged as part of the Twilight Performance Series. Friday-Saturday at 7 p.m. College of Southern Maryland, La Plata Campus, 8730 Mitchell Rd., La Plata. 301-934-2251. www.csmd.edu/arts. $5.
Marenje Marimba The eight-piece ensemble performs African songs and rhythms using homemade instruments. Part of the outdoor Sunset Concert Series. 7 p.m. O’Donnell Lake Restaurant Park, St. Patrick’s Drive and Smallwood Drive West, Waldorf. www.stcharlesmd.com. Free.