Mazurka in A-flat Major Op. 7 No. 4 by Frédéric Chopin. Sheet music and recordings of thousands of piano pieces by Frédéric Chopin and many other famous composers to view in your digital device, print out or listen to. Mazurka in A-flat Major - Op. 7 No. 4 is a piece by the early romantic composer Frédéric Chopin. It is written during the Early Romantic era and is included in Mazurkas by Chopin.