Now in its 15th year, the St. Patrick’s Day party that takes place today at House of Blues promises to be another rousing good time. It kicks off at 9 a.m. with a Music Hall performance by the local Pogues tribute act Boys from the County Hell. Pop Fiction follows at 2 p.m., and Sparky B takes the stage at 4 p.m. In the Cambridge Room, the Irish punk band Craic plays at 9:30 a.m. Then, at noon, 235-Funk takes the stage. DJ Mike Filly plays from 2 p.m. until closing. House of Blues Restaurant & Bar opens at 10 a.m., and the Foundation Room opens at 11 a.m. Admission to the concert is free but subject to the club's capacity. (Niesel)