Mr Bird, whose parents took him at age 12 to see the Mona Lisa behind bulletproof glass at the National Gallery of Art in 1963, recalled returning to his house and seeing the framed Utrillos in the basement recreation room with new appreciation. If General Motors had made art this would have been it. Robbins remembered that Leonardo da Vinci had left numbered sections of paintings for assistants to fill in. In 1952 he took the idea to Klein, the owner of the Palmer Show Card Paint Co, his new employer. Klein saw potential in marketing fail-safe artists' kits, in part because of the celebrity of Sunday painters like US president Dwight Eisenhower and Britain's Winston Churchill.
Singers cover songs.
This is just an artistic version of singalong.