The shortest song in the world is under 1 second long - Apparently.
The shortest song in the world is "The 47-second Song" by British composer and musician, Brian Hodgson, but that record was later broken by Norwegian composer, Erik Satie, in 1893. However, the current record holder is a German musician named Jörg Fauth, who composed a 0.96-second song titled "Kurzestes Lied" (Shortest Song) in 1989. This ultra-brief tune is a mere 0.96 seconds long and was recognized by the Guinness World Records as the shortest song in the world.