The Ricercare is characterized by a motif that is repeatedly played in a different sequence (one tone higher or lower), The composer is "researching" where one theme stops and a new theme begins. From a trombonistic point of view it is a search for the right phrasing, because unlike the cellist a trombonist has to stop to breathe. Furthermore, it is a search to bring forward from many notes the most important ones so that some sort of melody is created.
Recorded by:
Θ - Remko de Jager, on New Trombone Collective - CD 066414
Θ - Remko de Jager, on Trombone - CD 055421