Which composer did Beethoven regard as the greatest of his contemporaries: Franz Schreker or Luigi Cherubini?
Franz Schreker: Franz Schreker (originally "Schrecker"; 23 March 1878, Monaco – 21 March 1934, Berlin) was an Austrian composer, conductor, teacher and administrator. Luigi Cherubini:  Beethoven regarded Cherubini as the greatest of his contemporaries.
i don't know