You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "The Estonian Philharmonic Chamber Choir performs works by which Estonian classical and religious composer?" whose answer is Arvo Pärt.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Estonian composer known for works performed by the Estonian Philharmonic Chamber Choir
Useful Output:

Doc 1: The Estonian National Symphony Orchestra and conductor Arvo Volmer celebrate the 100th Anniversary of Estonia with works by composers
Doc 2: Arvo Pärt's music is the rarest of wonders, a most remarkable contradiction, an artistic experience that is mystical, singular, incomparable …
Doc 3:  Estonian composer Arvo Pärt's indelible mark on choral singing and classical music.  known Estonian music ensembles in the world. Led by Artistic
Doc 4: The internationally acclaimed Estonian Philharmonic Chamber Choir, under the direction of Tõnu Kaljuste, celebrates the famed Estonian composer Arvo Pärt and
Doc 5: IT MIGHT SEEM obvious, now, that an Estonian professional choir would gravitate towards the music of Estonia 's best-known composer, Arvo Pärt.