Let's Get It On (song) five. "Billboard" ranked it as the No. 4 song for 1973. The song became the biggest selling Motown release in the United States at the time, selling over two-million copies within the first six weeks of following its release. "Let's Get It On" also became the second best-selling single of 1973, only surpassed in sales by Tony Orlando & Dawn's "Tie a Yellow Ribbon Round the Ole Oak Tree". At the time, the single was Motown's largest-selling recording ever, selling over three-million copies between 1973 and 1975. The single has gone on to sell over 1 million copies, and, on
An Oak Tree colour, with the goal of discarding meaning, which is "both persistent and unstable", although he states that people's need to create associations and meanings makes this goal unachievable. "An Oak Tree" was first shown in an exhibition of Craig-Martin's work at the Rowan Gallery, off Bond Street, London, in 1974. Many visitors assumed that Craig-Martin was playing the ultimate con trick, as there seemed no evidence of work on display in the white-walled gallery. However, high up on a wall was the glass of water and the glass shelf of the work "An Oak Tree". At this time the accompanying