According to the Internet source given below, Paul Angerer was an Austrian violist, conductor, composer and radio presenter.
He studied music theory and composition with Friedrich Reidinger and Alfred Uhl, and conducting with Hans Swarowsky. He played viola with a number of orchestras in Austria and Switzerland before conducting before conducting the Vienna Chamber Orchestra and the orchestras in Bonn and Ulm. From 1967 to 1972 he was principal conductor of the Salzburg Opera Theater (Salzburger Landestheater) and led the Südwestdeutsches Kammerorchester from 1971 to 1982. Angerer then conducted the Concilium Musicum Wien and held a teaching position at the University of Music and Performing Arts in Vienna from 1982 to 1992.

Websites:
	Paul Angerer	Biography by wikipedia.org.

Recorder Sheet Music

Quartett I (Chamber work with A) 4 Performance Scores. Publisher: Ludwig Doblinger K.G. (07-00408)

Trio (A/Violin/Guit.) 40 pages. Publisher: Ludwig Doblinger K.G. (GKM-00070)

Konzert (Chamber work with A/A) Score. . For 2 alto recorders, 2 horns, clarinet, 2 violas. Also see: Part. - Also see: Reduction for 2 Recorder and Piano - Publisher: Ludwig Doblinger K.G. (04-00401)

Musica Trifida (A/A/T) Publisher: Ludwig Doblinger K.G. (HBR-00026)

Wie lieblich ist der Mai (A/A/B) Score and Parts. Publisher: Ludwig Doblinger K.G. (HBR-00027)

Quartett für 9 Blockflöten (S/S/D/D/A/A/A/T/B) Score and Parts. 16 pages. Publisher: Ludwig Doblinger K.G. (HBR-00035)