What is the longest song on spotify?

The longest song on Spotify is "The Rise and Fall of Bossanova" by PC III, which has a duration of 13 hours and 23 minutes. This experimental ambient track is an epic musical journey that combines elements of electronic, ambient, and drone music. It was released in 2018 and has gained a cult following for its unique and immersive listening experience. With its extended length, "The Rise and Fall of Bossanova" holds the record for the longest song available on Spotify, offering listeners an opportunity to immerse themselves in an extended sonic landscape.