It's a Beautiful Day is an American band formed in San Francisco, California in 1967, featuring vocalist Pattie Santos along with violinist David LaFlamme and his wife, Linda LaFlamme, on keyboards.
David LaFlamme, who as a youth had once performed as a soloist with the Utah Symphony Orchestra, had been in the group Orkustra playing five-string violin. The other members of It's a Beautiful Day in its early years were Hal Wagenet (guitar), Mitchell Holman (bass), and Val Fuentes (drums). Although they were one of the notable San Francisco bands to emerge from 1967's Summer of Love, the band never achieved the success of contemporaries such as Grateful Dead, Jefferson Airplane, and Santana, with whom they had connections. The band created a unique blend of rock, jazz, folk, classical, and world-beat styles during its first seven years.