Spotify, the world's largest music streaming service, has released a playlist called "Today's Soundtrack: Library of Youth," perfect for today's background music, evoking the season of encounters and partings.

The playlist features 50 uplifting pop tracks, including Sakanaction's popular "Shin Takarajima," Pharrell Williams' "Happy," Walk the Moon's "Shut Up And Dance," and the Black Eyed Peas' "I Gotta Feeling." It also includes nostalgic hits by Ulfuls, Lord of the Majors, Spitz, and others.

In addition, Spotify's new brand commercial, which shares the same theme as the playlist, has begun airing on terrestrial television. The commercial, which uses Sakanaction's "Shin Takarajima," the first song on the playlist, stars up-and-coming young actor Shimizu Hiroya and actress and model Miyoshi Ayaka.

Hidden within the video are items related to Sakanaction's first greatest hits album, "Fish Encyclopedia," which will be released on March 28th, so if you're interested, be sure to check every corner.