"Deep Purple" was practically ignored by the music press in the US upon its release in June 1969 and bounced up and down on the "Billboard" 200 chart for a few weeks, peaking at No. 162 and not coming close to the success of its two predecessors. Tetragrammaton's financial problems were partially to blame, for promotion was lackluster, but the lack of a hit single to be aired on FM radio or a tour in support of the album were also important factors.