Darrel Hoffman has uploaded a midi realization of Borgstrøm's piano concerto in C, Op. 22 (1910), based on the two-piano score he found on IMSLP: see <https://www.youtube.com/watch?v=nzGVvoCsZB0&t=870s>
Perhaps someone can help him locate the full score which includes 2 flutes, 2 oboes, 2 clarinets (B♭), 2 bassoons + 4 horns, 2 trumpets (C), 3 trombones + timpani + strings.
Perhaps someone can help him locate the full score which includes 2 flutes, 2 oboes, 2 clarinets (B♭), 2 bassoons + 4 horns, 2 trumpets (C), 3 trombones + timpani + strings.