Songfacts®:

• This was released as the first single from the American Psychedelic Pop band Yeasayer's third album, Fragrant World. Guitarist/keyboardist Anand Wilder told Complex magazine: "This was a single that we were all really excited about as being a new direction for the band. There's a great sounding sub-bass in it, and a pretty good melody that goes back and forth. A lot of good drops."
• Several of the Fragrant World tracks combine upbeat instrumentation with dark lyrical content, but on this song the band switches things round. Guitarist/keyboardist Anand Wilder told Complex magazine: "'Longevity' is super slow and sludgy, but it's actually a song about relationships and having good memories about some. I think conversely maybe some of the uptempo songs have darker context. I think it comes from searching for new ways to make sounds."
• Multi-instrumentalist Kishi Bashi played strings on this track. He has toured internationally as a violinist with such acts as Regina Spektor and Of Montreal.