Niels Peter Jensen (1802 - 1846) Danemark Niels Peter Jensen (23 July 1802 – 19 October 1846) was a Danish composer, flutist and organist. Niels Peter Jensen was an organ pupil of Friedrich Kuhlau. Since 1828 he was organist at St. Peter's Church (Petrikirche) in Copenhagen. As well, he was a flute virtuoso and teacher. He composed incidental music and numerous pieces for flute and for piano.