Sean Watkins is a busy man. After a seven-year hiatus, the singer/guitarist is once again performing with Nickel Creek, the bluegrass band he formed at age 12. He released Fiction Family Reunion in 2013 with Switchfoot’s Jon Foreman as part of the indie-folk group Fiction Family, and he’s also a member of Works Progress Administration, a supergroup that includes his sister and Nickel Creek bandmate, Sara. On top of all that, Watkins found time to release All I Do Is Lie, his fourth solo album, last June. All I Do loses a lot of the twang on Nickel Creek’s latest, A Dotted Line, but keeps the album’s acoustic earnestness. With Lauren Shera. The Triple Door, 216 Union St., 838-4333, the tripledoor.net. 7:30 p.m. $20 adv./$25 DOS. All ages.