Practicing scales - as the great Morecambe & Wise joke went "He's hitting all the right notes, but not necessarily in the right order."
Talking of M&W I was in Blackpool last month to see the illuminations with the family, when I came across this poster on the north pier.
Now look at the detail ... I think they mean shut your eyes and it could almost be them. This for the unitiated is the real M&W.