Original sentence: After he received his lifelong "artist professorship", Sallinen devoted most of his time to composing.He has received a number of commissions and has composed eight symphonies, including one using material from a proposed ballet based on The Lord of the Rings  and containing two mediaeval Finnish tunes from the Piae Cantiones.He has written seven operas and also composed the title track of the Kronos Quartet's album Winter Was Hard
Edited sentence: After receiving his lifelong art professorship, Sallinen devoted great amounts of time to composing.He has received a number of commissions from renowned ensembles and has composed eight symphonies, including one using material from a proposed ballet based on The Lord of the Rings  and containing two mediaeval Finnish tunes from the Piae Cantiones.He has revived standard forms and harmonies, but he puts them together in contemporary ways.He has written seven operas and is well known as the composer of the title track of the Kronos Quartet's album Winter Was Hard