The classic Deep Purple Mark II line-up continued to work, and released the album "Who Do We Think We Are" in 1973. Spawning the hit single "Woman from Tokyo", the album hit No. 4 in the UK charts and No. 15 in the US chart, while achieving gold record status faster than any Deep Purple album released up to that time. But internal tensions and exhaustion were more noticeable than ever. Following the successes of "Machine Head" and "Made in Japan", the addition of "Who Do We Think We Are" made Deep Purple the top-selling artists of 1973 in the US.