September was a Slovenian and Yugoslav rock band formed in Ljubljana in 1975. They were one of the most prominent acts of the 1970s Yugoslav rock scene.
The band was formed by at-the-time already prominent musicians Janez Bončina, Tihomir "Pop" Asanović, Petar Ugrin, Ratomir "Ratko" Divjak, Karel "Čarli" Novak and Braco Doblekar. The band's debut album, Zadnja avantura, brought them nationwide popularity with its jazz rock sound. After its release, Ugrin, Divjak and Novak left the band. September was joined by Marijan Maliković, Jadran Ogrin and Nelfi Depangher, the new lineup recording the album Domovina moja, with which they moved towards less complex, more rock-oriented sound. The band disbanded in 1979, reuniting for live performances in 2003 and 2012.