Chas & Dave (often billed as Chas 'n' Dave) are an English pop rock duo, most notable as creators and performers of a musical style labelled "rockney", which mixes "pub singalong, music-hall humour, boogie-woogie piano and pre-Beatles rock 'n' roll". For a time, "Rockney" was also the name of their record label, and they achieved several British chart hits, their major breakthrough being "Gertcha" in 1979, which peaked at No. 20 in the UK Singles Chart, and was the first of eight Top 40 hit singles the duo played on. The act has also enjoyed nine best-selling albums. In July 2013, it was announced that Chas & Dave have recorded a new album, 'That's What Happens', due for release in October 2013.