Longest officially released song
Who
Michael Bostwick, Kelley Bostwick
What
13:23:32 hour(s):minute(s):second(s)
Where
United States (Palmer)
When

The longest officially released song is "The Rise and Fall of Bossanova (A 13:23:32 song)" by PC III (USA) which lasts 13 hr 23 min 32 sec, released on 1 November 2016.

Michael and Kelley Bostwick beat the current record by more than 10 hours to regain their title.