Wish You Were Here (Pink Floyd album) tribute to Pink Floyd founder Syd Barrett, who left seven years earlier due to mental health problems. As with their previous album "The Dark Side of the Moon" (1973), Pink Floyd used studio effects and synthesizers, and brought in guest singers: Roy Harper, who provided the lead vocals on "Have a Cigar", and Venetta Fields, who added backing vocals to "Shine On You Crazy Diamond". "Wish You Were Here" topped record charts in the United Kingdom and the United States, and Harvest Records' parent company EMI was unable to print enough copies to meet demand. Although it initially received mixed
Wish You Were Here (Pink Floyd album) was sold in an opaque green cellophane sleeve – censoring the cover image – and he copied the idea, concealing the artwork for "Wish You Were Here" in a black-coloured shrink-wrap (therefore making the album art "absent"). The concept behind "Welcome to the Machine" and "Have a Cigar" suggested the use of a handshake (an often empty gesture), and George Hardie designed a sticker containing the album's logo of two mechanical hands engaged in a handshake, to be placed on the opaque sleeve (the mechanical handshake logo would also appear on the labels of the vinyl album this time in