Them was a Northern Irish rock and roll band that was formed in Belfast in 1963. Best known for the garage rock standard "Gloria" and for launching singer-songwriter Van Morrison's careers, the group had an energetic sound that fit right into the British blues and rock boom of the 60s. With Van Morrison on vocals and harmonica, it featured as well Billy Harrison on guitar, Eric Wrixen on piano and keyboards, Alan Henderson on bass, and Ronnie Millings on drums