Therese Grankvist spent her early childhood in Nässjö, but moved to Tullinge (near Stockholm) at the age of 13. Her career started when she called a record company and recorded her singing on their answering machine. When she later met Dr. Alban, he convinced her to join the dance music project Drömhus. At first, Drömhus was meant to consist of two men and Therese, but eventually shrank to being just Therese and the producers.
In 1997, Drömhus's first single "Du och jag" ("You and I") was released. The big breakthrough, however, came in 1998 with the single "Vill ha dig" ("Want You"), a cover of a hit by the band Freestyle in the 1980s.
At the 1999 Melodifestivalen, the Swedish qualification for Eurovision Song Contest, Drömhus competed with the song "Stjärna på himmelen" ("Star in the sky"). It finished second, thus not qualifying for the European finals.
In 2000, Therese announced that she would leave Drömhus to perform under her own name Therese instead.
The year 2004 launched Therese overseas, with her remarkable success with Swedish DJ Stonebridge. They teamed up to release the worldwide dance hit ("Put 'Em High"). In late 2004, she produced her club hit "Time". In 2005, Therese also provided backing vocals on Dannii Minogues track Perfection which was produced by the Soulseekerz.
Grankvist together with The Attic, competed with the song "The Arrival" at Melodifestivalen 2007 for the opportunity to represent Sweden in Eurovision...