And now... (unrecorded music)

Many of Holmboe's works are yet to be recorded. To keep this list manageable, I have only included the works with opus numbers. Even then, and even taking into account the works that appear to be missing or incomplete and thus unlikely to ever be heard, there is still a considerable amount of music that could be recorded by an enterprising label.

Da Capo in particular deserves credit for cutting down the size of this list by a large margin, and also re-recording music that is no longer readily available. But there is still a lot more music out there. If anyone tells you everything in 'classical' music has basically been recorded (a remark apparently made by a major record label executive at a conference), show them this list.

• Opus 1: Suite No.1 for chamber orchestra
• Opus 2b: Chamber Sonata No.1 (orchestration of Violin Sonata No.1)
• Opus 3: Serenade for flute, clarinet, violin, viola and cello
• Opus 5: Rhapsody for flute and chamber orchestra
• Opus 6: Suite No.2 for chamber orchestra
• Opus 7a: 3 Lyriske sange (Lyrical songs) for soprano and piano
• Opus 7b: Stilfærdige sange (Quiet songs) for mezzo-soprano and piano
• Opus 8: Rapsodisk intermezzo for violin, clarinet and piano
• Opus 9: Quartet for flute, violin, cello and piano
• Opus 10: Quintet for flute, oboe, clarinet, violin and viola
• Opus 11: Suite No.3 for chamber orchestra
• Opus 12b: Danish Suite for piano
• Opus 13a: Psalm 62 for children's choir
• Opus 13b: Concerto-symphony for violin and orchestra (incomplete)
• Opus 14: Violin Concerto No.1
• Opus 22: Concertino No.1 for violin, viola and string orchestra
• Opus 23: Fanden og borgmesteren (The Devil and The Mayor), symphonic fantasy play
• Opus 24: Concertino No.2 for violin and string orchestra (lost)
• Opus 26: String Quartet (possibly incomplete)
• Opus 28: Symphonic Overture
• Opus 32a: Den galsindede tyrk (The Ill-Tempered Turk), complete ballet
• Opus 41: Rosette (Sonatina) for soprano, tenor and piano
• Opus 42: Music for the radio play Fløjten (The Flute) (lost)
• Opus 45a: 12 Danske skæmteviser (Danish jesting ballads) for mezzo-soprano and piano
• Opus 45b: Træer og væster (Trees and plants) for mezzo-soprano and piano
• Opus 45c: Bjergenes sang (Song of the mountains) for mezzo-soprano and piano
• Opus 51: Isomeric for 2 violins and piano
• Opus 58: Sendebude (Messengers) for baritone and piano
• Opus 62: Træet (The Tree) for choir with chamber orchestra
• Opus 74: Skoven (The Forest) for choir with orchestra
• Opus 75: Tropos for string quintet
• Opus 82: Sonata for solo double bass
• Opus 83: Duo concertante for violin and viola
• Opus 88a/b: Moto austero for piano (original and revised versions)
• Opus 91: Kikbariuk (3 Inuit songs, set 2) for alto, clarinet and drums
• Opus 93a: Oboe Sonatina (original version)
• Opus 94: Zeit (Time) for alto and string quartet
• Opus 97: Trio for flute, cello and piano
• Opus 99a/b: I Venti (The Winds) for piano
• Opus 106a: Fanden løs ivildmosen (The Devil to Pay in the Marsh) for clarinet, 2 violins and double bass
• Opus 106b: Musk for fugle og frøer (Music for Birds and Frogs) - originally for 2 flutes and 16 bassoons, alternate version for 2 flutes, viola and bassoon
• Opus 107a: Edward, a border ballad for baritone and orchestra
• Opus 107b: The Wee Wee Man, a border ballad for tenor and orchestra
• Opus 109a/b: Ondata I & II (Waves I & II) for percussion
• Opus 112: Fabula I (Fable I) for organ
• Opus 118: Diafora (Differences) for strings
• Opus 128: Døgnets timer (The hours of the day) for string quartet (incomplete)
• Opus 130: Firefir for four flutes
• Opus 131: Louisiana Concerto for strings
• Opus 134: Ordet (The Word) for choir, brass and organ
• Opus 137: Trio for clarinet, cello and piano
• Opus 138a: Þótt form þín hjúpi graflín (Although a shroud covers your form) for choir
• Opus 150: Bibelsk kantate (Biblical cantata) for choir, brass and strings
• Opus 161: Ode til sjælen (Ode to the soul) for choir, brass and organ
• Opus 162: Tuba Sonata (tuba and piano)
• Opus 163: Psalm 84 for choir
• Opus 165: String Quintet
• Opus 169: Rejsende (Travellers) for choir
• Opus 172b: Translation for piano quintet
• Opus 173: Psalm 65 for choir
• Opus 177: Capriccio for clarinet and piano
• Opus 178: Sonata for solo viola
• Opus 179b: 3 + 3 = 5 for piano
• Opus 181: Winter for soprano and choir
• Opus 182: Epos for 2 pianos and percussion
• Opus 183: Die Erfüllung (The Fulfilment) for choir, woodwinds and brass
• Opus 190a: Sværm (Swarm), original version for 2 violins
• Opus 191b: Springbuk (Springbok) for recorder
• Opus 194: Vinter (Winter) incidental music for orchestra
• Opus 195: Concerto for string quartet and orchestra
• Opus 196: Ave Maria for voice and organ