Just before matriculation, he started composing, and wrote his first pieces, devoted to the piano: Little Prelude (April 20, 1916) and Andante (August 18, 1916).
Pred samu maturu počinje se baviti i skladanjem te piše svoje prve skladbe posvećene glasoviru: Mali preludij (20. travnja 1916.) i Andante (18. kolovoza 1916.).