Belgian percussionist and composer Theo Coutelier is most well-known for performing the solo part of the premiere of Darius Milhaud's Concerto for Percussion and Orchestra, Op. 109. As a composer, he wrote a variety of repertoire pieces for percussion instruments, for which there did not previously exist many works. This volume contains eighteen etudes for timpani with piano accompaniment. Unique about this collection is that each accompaniment was composed by a different Belgian composer of the era, including Jean Absil, Georges Colin, Jef Maes, Yolande Uyttenhove, amongst others. As of 2019, this edition includes a newly engraved solo timpani part in addition to the manuscript piano accompaniment, wheras previous editions only included the full score.