The use of initials spelled out in musical pitches is a device often used by Robert Schumann ( for example , in his Carnaval ) .
Tchaikovsky was a great admirer of Robert Schumann 's music .
The use of initials spelled out in musical pitches is a device often used by Robert Schumann ( for example , in his Carnaval ) , and Tchaikovsky was a great admirer of Schumann 's music .