Octave is the ninth album by the Moody Blues (the eighth by this particular line-up), released in 1978, and their first release after a substantial hiatus following the success of the best-selling Seventh Sojourn in 1972. It saw the Moody Blues returning in an era of punk music and disco, Octave produced a reduced commercial outcome for the band, but reached No. 6 in the United Kingdom and went platinum in the United States, where the album reached No. 13. The album produced the hit single "Steppin' in a Slide Zone", which hit No. 39 in the US, in addition to "Driftwood". The album's title is a musical pun: it references both the notion of an octave; and as a word derived from the Latin octavus it refers to this being the eighth album by this line-up of the Moody Blues (following on from the previous album title Seventh Sojourn).