TO-DO LIST

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Glendi at the Avalon: Join this informal party and potluck dinner. The band Sherefe will play Greek music, with other Balkan flavors occasionally thrown in; 6p.m. Saturday, Avalon Ballroom, 6185 Arapahoe Road, Boulder; free; 303-817-0967.

Manon by Massenet: Enjoy French Grand Opera under the baton of Steven Aguiló-arbues, featuring an ensemble orchestra and sung in French with English subtitles; 7p.m. Saturday, Dairy Arts Center, 2590 Walnut St., Boulder; $25-$45; boulderoperacompany.com.

Grieves at The Fox Theater: Seattle rapper Grieves returns to deliver his fourth studio album, “Winter & The Wolves.” The MC is well known for his meticulous exploration of life, love and loss through a unique medley of hip-hop and soulful music; 8:30p.m. Saturday, The Fox Theatre, 113513th St., Boulder; $25; z2ent.com.

‘Hidden Places’ opening reception and brunch: Enjoy a morning of creative expression with local artist Kathleen Leroy to celebrate her new exhibit “Hidden Places,” while enjoying savory breakfast pies from Tip Top Pies, danishes, fruit and a hardboiled egg bar; 10 a.m. Sunday, R Gallery + Wine Bar, 2027 Broadway, Boulder; $6-$49; rgallery.art.

Ballroom Culture 101: Get ready to walk the runway with Out Boulder County’s Ballroom Culture 101 workshop; 1 p.m. Sunday, OBC’S Equality Center of the Rocky Mountains, 3340 Mitchell Lane, Boulder; free; outboulder.org.

Jack Hadley at BOCO Cider: Jack Hadley will be playing blues covers from his favorite artists and songs from his new album “Daybreak in Alabama — The Langston Hughes Project”; 4 p.m. Sunday, BOCO Cider, 1501 Lee Hill Drive, Unit 14, Boulder; free; bococider.com.

Hawaiian hula classes: Boulderite Miriam Paisner, who lived in Hawaii for 20 years and holds a master’s in dance ethnology with a Polynesian dance focus, teaches a weekly hula class where drop-ins are welcome; 5 p.m. Sundays, Boulder Ballet Studio 3 at Dairy Arts Center; $20-$75; hulamaunakomohana.weebly.com.