They signed a recording contract with Warner Music in Norway, and released their self-titled debut album in 1989.

The band line-up was broadened by the addition of bassist Gulleiv Wee and drummer Stene Osmundsen before the following tour.

In 1993, they released the album One Eye Open, which contains the band's highest-charting Norwegian hit, "Can I Trust You"; it peaked at number two on the VG-lista chart the same year.

The same year they released the compilation Absolute The September When – Prestige de la Norvège 1989–96.

According to the Morten Abel website, The September When reunited for a show on August 28, 2008, in Stavanger, Norway.