Seeing live music can be a transcendent mind-body experience, akin to getting a tattoo underwater, or making out during an eclipse. Transcend boredom with today's Groupon: for $19, you get one reserve ticket to see Celtic Crossroads at the Tower Theatre on Friday, January 21 at 7:30 p.m. (a $39.50 value).

Celtic Crossroads is a troupe of musicians and dancers dedicated to rejuvenating the folk music traditions of the Emerald Isle. Surrounded by whirling dancers and stunning scenery, Celtic Crossroads jams out on more than 20 different instruments over the course of a performance. Their music, which expertly jumbles genres from eastern European gypsy to North American bluegrass, can suddenly shift from the lilting airs of uilleann pipes and Irish harp to intricate banjo plucking and booming drums. Such diversity will fit in well at the 71-year-old Tower Theatre, whose eclectic interiors feature neon-tube lighting, fluorescent panoramas from muralist Anthony Heinsbergen, ghostly hauntings from three former U.S. presidents, and a restored marquee. When Celtic Crossroads' preservers of Eire's traditions set foot in the historical venue, two worlds rife with historical importance will combine to form one memorable and eclectically soundtracked night.