The Ten Choral Overtures for organ are intended for both liturgical purposes, and concert performance. For this reason the notation is written in two staves, which is not usual for the organ. The former of the two purposes forced the composer to respect certain limitations of technical complexity, so that even an untrained organist could perform the pieces. The themes to each overture are taken from Bohemian Brethren chorales, which appear in their original form as brief “intonations” in the first few bars preceding each overture. The piece was composed in 1971.