O Holy Night by Adolphe Adam is arranged here by Peter Covino, Jr., for solo trumpet or duet, and piano. This arrangement modulates everywhere. Download it here for $2.50. Copyright stickers will be sent upon receipt of payment. Parts sold separately if desired. Free LDS choir sheet music, hymn arrangements, and piano and voice songs are available here.
It is also available for full orchestra and other combinations at this site. You can request a key or instrumentation.
To print, click here: O holy night brass duet piano