“Oceano” is the lead track on Josh Groban’s 2003 album Closer, the top-selling album of the 2000s in the US.
Produced by David Foster, the song begins by fluidly passing between F major and F minor. In the instrumental interlude between verses, the harmony turns very chromatic, passing through Eb major and E minor before winding back to the tonal center of F at 2:06. There is a definitive modulation to Db at 3:05, which then segues into a subdued outro in D minor.