UnScramble this Word: b e a l d?

Questions

Name the composer who wrote a an opus to specifically demonstrate equal temperament. ?

Sonata No. 8, Opus No.13 in C minor by Beethoven is referred to as: ?

The first four notes (of the melody) of Beethoven's Sonata Pathetique in C minor are: ?

The first four notes of the first main theme of Chopin's Grande Valse Brilliante in Eb major are: ?

The first four notes of the first main melody in Chopin's "Minute Waltz" in Db are: ?