Train have an annoying way of making themselves unconditionally love-able. Though we've probably heard "Hey Soul Sister" more than a thousand times on the radio, we still can't help but find an inner happiness whenever this song plays on the radio. Held together mostly by ukulele chords, "Hey Soul Sister" might be one of Train's simpler songs. That said, it still feels as important as their classic single, "Drops of Jupiter" (minus all the kleenex boxes used up listening to that song on repeat). If you know someone having a rough day, try and keep this sheet music on hand so you can instantly make them smile.