Shamrock Vagabonds are the product of a jam session in the Gràcia bar Jamming Lounge that ended up in a video of the four founding members singing a cappella in the street and the subsequent offer to return to the bar and perform as a group. They sing with different vocals, creating a variety of harmonies with a rhythmic and powerful instrumental base made up of guitars, a violin and percussion. This year they're playing the Gràcia festival on Sunday the 20th in C/ de Mozart, and on Thursday the 17th you can catch them at a vermouth special in C/ del Progrés.