John Hasnip, a singer-songwriter from Yeovil, England, brings his quick wit, a solid catalogue of songs, great vocals and an expressive guitar style to Pedro O’Hara’s Friday, from 8 to 11 p.m. On Saturday, Rugged  Jack, Maine’s premiere American roots-rockabilly experience performs from 8 p.m. to midnight.  The band combines the powerful percussion of Rumford native Tom the “H-Bomb” Hines, the guitar wizardry of Corey Bonnevie, and the unparalleled bass slapping and acrobatics of Holly Marie. No cover charge for either show. Pedro O’Hara’s is located at 134 Main St., Lewiston.