A horrible composer during the Baroque period. Followed all the rules of theory and had little to no melodic significance.
Lame musician: Hey, i can play a bunch of 16th note runs, arent i cool now?
Intelligent musician: No, anyone can play scales and arpeggios. Go play something with a melody why don't ya?
Shostakovich's violin concerto is better than Vivaldi's. Why? cuz Shosty's is hard to play and has a melody. Vivaldi just stuck a bunch of notes from a key togeth and called it "Four Seasons."