- Profession: Tenor.
- Relation to Mahler: Worked with Gustav Mahler.
- Correspondence with Mahler:
- Born: 19-09-1868 Königsberg, Germany.
- Died: 01-10-1913 Berlin, Germany.
- Buried: 00-00-0000
- 1910 Concert Munich 12-09-1910 – Symphony No. 8 (Premiere).
- 1910 Concert Munich 13-09-1910 – Symphony No. 8.
Felix Senius (1868-1913) album.