| 1887 | Scherzo en do menor per a orquestra (WoO) | Confirmat | 12' |
| 1888 | Concert per a violoncel en la menor, Op. posth. (WoO) | Confirmat | 25' |
| 1888 | Der Blumen Rache, WoO 1 (ballad per a contralt, female cor i orquestra) · cor | Confirmat | 20' |
| 1901 | Die Rose vom Liebesgarten (romantic opera in 2 acts with pròleg i epilogue) · òpera · cor | Confirmat | 160' |
| 1905 | Das Käthchen von Heilbronn, Op. 17 — música incidental to Kleist's play (complete, Op. 17a–d) | Confirmat | 44' |
| 1905 | Das Käthchen von Heilbronn, Op. 17a — Obertura | Confirmat | 14' |
| 1906 | Das Christ-Elflein, Op. 20 — Obertura | Confirmat | 12' |
| 1906 | Das Christ-Elflein, Op. 20 (Spieloper in 2 acts) · òpera · cor | Confirmat | 120' |
| 1917 | Palestrina — Drei Vorspiele (tres preludis) | Confirmat | 25' |
| 1917 | Palestrina (Musikalische Legende in 3 acts), WoO 17 · òpera · cor | Confirmat | 200' |
| 1921 | Von deutscher Seele, Op. 28 (romantic cantata after Eichendorff) · cor | Confirmat | 90' |
| 1922 | Concert per a piano en mi bemoll major, Op. 31 | Confirmat | 40' |
| 1923 | Concert per a violí en si menor, Op. 34 | Confirmat | 35' |
| 1930 | Das dunkle Reich, Op. 38 (choral fantasy) · cor | Confirmat | 37' |
| 1931 | Das Herz, Op. 39 (drama for music in 3 acts) · òpera · cor | Confirmat | 150' |
| 1932 | Simfonia en do sostingut menor, Op. 36a | Confirmat | 30' |
| 1935 | Concert per a violoncel en sol major, Op. 42 (in one movement) | Confirmat | 18' |
| 1937 | Duo per a violí, violoncel i orquestra petita, Op. 43 | Confirmat | 16' |
| 1939 | Elegie und Reigen per a orquestra petita, Op. 45 | Confirmat | 14' |
| 1939 | Kleine Sinfonie (Little Symphony) en sol major, Op. 44 | Confirmat | 20' |
| 1940 | Simfonia en do major, Op. 46 (three movements in one) | Confirmat | 20' |
| 1941 | Fons salutifer, Op. 48 (hymn per a cor mixt, orquestra i orgue) · cor | Confirmat | 10' |
| 1943 | Concert per a violoncel en la menor, Op. 52 | Confirmat | 25' |
| — | Die Heinzelmaennchen, op. 14 (The Imps) | TBD | — |