Almost three years after the release of their last studio album, Siddharta returned with Petrolea, an album much different in sound and arrangement from its symphony-based predecessor. One could say that in a way this album was Siddharta's return "to the garage" and thus came close to the band's original sound. This, however, does not mean that the production was any less glamorous. On the contrary, a selection of domestic and foreign studios, combined with the experienced ear of Žare Pak and the musical perfectionism of the band members offered Slovenia an album marked by many a critic as album of the year 2006.