Ten Notes on a Summer's Day is the sixth and final studio album by the English punk rock group Crass, though members of the group subsequently collaborated and recorded under other names.

[5][1] It was released in 1986 and consists of a vocal and instrumental version of the same tracks in an avant-garde musical style.

The album was remastered and re-released as the sixth and final part of the Crassical Collection.

[6] The version of track 1 on the Crassical Collection CD has the opening notes from the instrumental version dubbed over the "What happened to Crass?"

speech at the beginning of the vocal mix.