Frantisek Gregora Ed: Miloslav Gajdos . Edited by Miloslav Gajdos, this short and energetic scherzo offers interesting repertoire for the intermediate bassist. There are musical and technical challenges, in bass clef throughout, with a lively and supportive accompaniment. Frantisek Gregora (1819-1887) was a prolific composer of music for double bass, and this is ideal for both concert and educational use. About Grade 7 standard, there are some easy double stops in the extended solo cadenza, ending with a fast and energetic final flourish.. Performance Level: 7.. Grade: 7