[Wikipedia article](http://en.wikipedia.org/wiki/Wolfgang_Amadeus_Mozart#Influence) only mentions [Hummel](http://en.wikipedia.org/wiki/Johann_Nepomuk_Hummel) from Mozart's childhood but gives no further information. I will appreciate if someone could shed more light here, in particular which composers have had an influence on Mozart's work?
Gluck and Haydn are often mentioned. But Mozart was very active and very knowledgeable about the music scene he was a part of; he probably was aware of pretty much all of the contemporary music scene.