On Thursday evening about 40 fans of all ages, from seniors to young children, enjoyed a socially-distanced performance by the PickPocket Bluegrass Band at the Martha’s Vineyard Museum. Listeners sat in twos and threes inside separation circles painted on the lawn or stood at a distance, some with leashed dogs in tow.

“This is our first concert in many, many months. We’ll see if we can remember how to play,” said guitarist and master of ceremonies Dana Edelman, who was joined on the wide museum porch by PickPocket mandolinist Charlie Giordano and the versatile Andy Herr playing banjolele and melodica.

Two more band members flanked the porch at ground level, bassist Brad Tucker and multi-instrumentalist Anthony Esposito, who played djembe drum and foot tambourine on several numbers.

Kicking off with the Canadian reel Whiskey Before Breakfast, Mr. Edelman led the band through an hour-long set of fiddle tunes and other old-time songs that had listeners’ toes tapping: Hollow Poplar, Red Haired Boy, Blackberry Blossom and more.

Mr. Edelman also sang lead on PickPocket’s vocal numbers, including British folk song The Fox (Went Out on a Chilly Night) and Hank Williams’ honky-tonk anthem I’ll Never Get Out of This World Alive. Harmony vocals by Mr. Tucker, Mr. Giordano and Mr. Herr added depth and authenticity to the sound.

Appreciative audience members clapped, cheered and in some cases danced to the music, which included plenty of crowd-pleasing solos from Mr. Edelman, a deft flat-picker; Mr. Giordano, whose mandolin playing was full of verve; and Mr. Herr, who chiefly played the banjolele—a short-necked hybrid of banjo and ukulele—but also improvised eloquently on the melodica, a mouth-blown keyboard. Playing upright bass, Mr. Tucker held down the bottom end and contributed some good-natured banter between songs.

Mr. Herr engineered the concert’s amplified sound, which was flawless, and for the final numbers introduced a special guest, his girlfriend Lucy Morrison, making her public debut on ukulele. After the band serenaded her with Happy Birthday, a smiling Ms. Morrison joined in as they played Oh Susanna.

Postponed from the previous week due to weather concerns, the concert wrapped up a month of Thursday-evening events on the museum lawn that were programmed by Vineyard Haven artist Paul Lazes.