3.  He was baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart  He was a prolific and influential composer of the Classical era.  He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, operatic, and choral music.symphonic concertantechamberoperaticchoral music

4.  Here is a list of the popular compositions of Mozart:  Eine kleine Nachtmusik  Rondo Alla Turca  The Requiem  Don Giovann  Piano Fantasie in D minor

6.  (Franz) Joseph Haydn was born in Rohrau, Austria. He was a prominent and prolific composer of the Classical Period.  Some compositions of Haydn includes:  Twenty Variations in G Major  Fantasia (Capriccio) in C major  Variations (5) in D major

8.  He was a composer of the Classical era, the eleventh surviving child and youngest son of Johann Sebastian Bach.  He was born in Leipzig, Germany.

9.  March "vom ersten Bataillon Garde-Regiments in Hannover„  March in E flat major  String Quintet in B flat major

10.  DEFINITION OF TERMS:  symphony definition. An extended musical composition for orchestra in several movements, typically four.

11.  con·cer·tan·te means denoting a piece of music containing one or more solo parts, typically of less prominence or weight than in a concerto.  cham·ber mu·sic means instrumental music played by a small ensemble, with one player to a part, the most important form being the string quartet which developed in the 18th century. cham·ber

12.  Opera (English plural: operas; Italian plural: opere) is an art form in which singers and musicians perform a dramatic work combining text (called a libretto) and musical score, usually in a theatrical setting. Opera Choral music Choral music is necessarily polyphonal-i.e., consisting of two or more autonomous vocal lines. It has a long history in European church music.