Caspar Diethelm (1926-1997) was a prolific Swiss composer and musical polymath, whose diverse interests extended beyond music into politics, botany, and mineralogy. His extensive body of work includes symphonic pieces, piano studies, and sonatas, showcasing his versatility and depth as a composer. Diethelm's compositions, such as his Symphony No. 3 and the memorial items Passacaglia and Consolatio, are known for their emotional resonance and technical sophistication. His music has been brought to life by esteemed orchestras like the Royal Scottish National Orchestra, under the baton of conductors such as Rainer Held. Diethelm's legacy continues to captivate audiences and musicians alike, offering a rich tapestry of sound that reflects his multifaceted genius.