"And So I Know" was written by Stone Temple Pilots bass player Robert DeLeo and frontman Scott Weiland, who added the dreamy lyric to DeLeo's wistful track. Musically, it was inspired by bossa nova music. "It came from really just getting turned on to a lot of bossa nova at the time and learning those kind of chords and those voicings," DeLeo said in a Songfacts interview
. "It's one of the most beautiful types of music to listen to. It's so pure, and when I listen to that, it kind of puts me in another place. That's what I love about bossa nova and the Brazilian spirit, and just how they approach music and their attitude towards it. It's hypnotic."