The Holmes Brothers are the finest band on the blues circuit today. Their signature sound blends blues, gospel, R&B, soul, and country influences into a seamless fabric of Southern roots music that is simultaneously contemporary and traditional. On their most recent album, Promised Land, brothers Wendell and Sherman Holmes and Popsy Dixon continue to bring the juke joint and church into closer proximity, mixing sacred and secular themes with the sounds of both Saturday night and Sunday morning. Dixon’s cover of Tom Waits’ “Train Song” is a surprise highlight, and his reworking of the Beatles’ “And I Love Her” showcases his sublime falsetto. Wendell balances Dixon’s smoothness with a voice that could be compared to that of a veteran Baptist preacher raised on Jimmy Reed 45s. Call out for the Carter Family’s “Wildwood Flower” to hear how the trio’s instrumentals match their vocals in both power and stylistic range. At 9:30 p.m. at Twist & Shout, 4800 Auburn Ave., Bethesda. $8. (301) 652-3383. (Matt Watson)