Younger Than Yesterday is the fourth album by the American rock band The Byrds and was released on February 6, 1967 on Columbia Records (see 1967 in music). It saw the band continuing to integrate elements of psychedelic rock into their music, a process they had begun on their previous album, Fifth Dimension. In addition, the album captured the band and record producer Gary Usher experimenting with new musical textures, including brass instruments, reverse tape effects and an electronic oscillator.