After a successful multi-band tour in support of Status Quo, the band recorded the album "Jailbreak", which proved to be their breakthrough record. Released on 26 March 1976, it featured the worldwide hit "The Boys Are Back in Town" which reached No. 8 in the UK, and No. 12 in the US, their first charting record in that country. The twin guitar sound had been fully developed by this time and was in evidence throughout the album, particularly on the hit single, and other tracks such as "Emerald" and "Warriors". The album also charted well on both sides of the Atlantic, reaching No. 10 in the UK and No. 18 in the US, and the follow-up single, "Jailbreak", also performed well. Thin Lizzy toured the US in support of various bands such as Aerosmith, Rush and REO Speedwagon, and they planned to tour there again in June 1976, this time with Rainbow. However, Lynott fell ill with hepatitis and the tour was cancelled, which set them back a few months.