Baby Names Beginning With "W": Meaning: Son of WILLIAM?

Questions

(Ger.) - Hindemith's term for works (mainly in the 1920s) intended to be closer to the public and directed to a social or educational purpose, utilising idioms in everyday use. Gebrauchmusik was represented in many forms, including music written to be played by anyone.?

(Fr.) - Waltz.?

- Generally this means to improvise a song accompaniment.?

- The modification or development of a theme, passage or figure with the theme always remaining recognizable.?

- Abbreviation for cello.?