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- Mūzika klavierēm, stīgām un timpāniem (Music for Piano, String Orchestra, and Timpani ) - Pēteris Plakidis
- Mūzika ziemas vakara fonā (Background Music for a Winters Evening) , for mezzo-soprano, flute, clarinet, violin, cello, triangle, and piano - Rihards Dubra
- Mūžam zili (Forever Blue) , for mens choir - Emīls Dārziņš
- Mūžība (Eternity) , (SSSSAATTBB) for mixed choir - Pēteris Plakidis
- Mūžība (Eternity) , (SATB) for mixed choir - Jānis Porietis
- Mūžības skartajiem (Those Touched by Eternity) , for mixed choir - Arturs Maskats
- Mūžīgās ilgošanās gaisma (The Light of Eternal Longing), concerto , for marimba and string orchestra - Rihards Dubra
- Mūžīgo pakalnu ilgošanās (Longing of Eternal Hills) , for organ - Rihards Dubra
- My Dearest Dear , for voice and piano - Dace Aperans /Aperane/ (Stauvers)
- Nāc man līdz (Come with Me) , (TTBB) for mens choir - Emīls Dārziņš
- Nac un redzi (Come and See) , for mixed choir (SATBB) - Rihards Dubra
- Nakts dziesma (Night Song) , (SSATB) for mixed choir - Leons Amoliņš
- Nakts lugsana (Night Prayer) , for mixed choir (SSSAAATTBB) - Ēriks Ešenvalds
- Nakts sarunas (Night conversations) , for clarinet and piano - Pēteris Plakidis
- Nāru dziesma (Mermaid`s Song) , for womens choir - Emīls Dārziņš
- Nāvi ar nāvi iznīcinājis (Death Conquered by Death), oratorio , for mixed choir, phonogram and painting reproductions - Georgs Pelēcis
- Ne šūpulī greznā (Away in a Manger) , for mixed choir, solo and instrumental ensemble - Valts Pūce
- Neatstaj! (Do Not Leave It) , (SATB) for mixed choir - Jānis Porietis
- Nemanot (Imperceptibly) , for mezzo-soprano and piano - Andris Balodis
- Nepiedzimis rīts (An Unborn Morning) , soli (CtCtCt) for mens choir - Juris Karlsons
- No debesīm šurp (The First Nowell) , for mixed choir (SATB), solo (ST) and instrumental ensemble - Valts Pūce
- No neatminamiem laikiem (From the Dim and Distant Past) , for symphony orchestra - Ēriks Ešenvalds
- Noktirne (Nocturne) , for harp - Maija Einfelde
- Noktirne (Nocturne) , for symphony orchestra - Sara Teasdale
- Noktirne (Nocturne) , for symphony orchestra - Ēriks Ešenvalds
- Nolemtība (Destiny) , (SSSSAAAATTTBBBBBB) for mixed choir - Pēteris Plakidis
- Nu, dusi, puisīt (Sleep, Little Child) , for mixed choir (SATB), solo (boy S) and instrumental ensemble - Valts Pūce
- Nunc dimittis , for male choir (TTTBB) - Rihards Dubra
- O bone Jesu , for mixed choir - Rihards Dubra
- O Crux ave , (SATB) for mixed choir - Rihards Dubra
- O Magnum Mysterium , for mixed choir (SSSAAATTBB) - Rihards Dubra
- O Salutaris Hostia , for female choir / ensemble (SSAA) and two solo voices - Ēriks Ešenvalds
- Oculus non vidit , (SAAAATBBB) for mixed choir - Rihards Dubra
- Odu vakara deja (Mosquitoe`s Evening Dance) , for mixed choir (SSAATTBB) - Ilona Rupaine
- Oki, leji, leiten , for mixed choir (SSAATBB) - Ilona Rupaine
- Omnes sitientes venite ad aquas, oratorio , for 2 mixed choir, alto saxophone, 2 saxophone quartets (SATB), percussion and organ - Rihards Dubra
- One More Weber opera , for clarinet and symphony orchestra - Pēteris Plakidis
- Oratio , for marimba and mixed choir (SSSAAATTBB) - Rihards Dubra
- Ostinato , for cello and orchestra - Romualds Kalsons
- Otra sonate (Second Sonata) , for violin and piano - Maija Einfelde
- Otrā sonāte (Second Sonata) , for piano - Juris Karlsons
- Ouverture à la fête , for flute, cello and harpsichord - Juris Karlsons
- Pa Duruflē pēdām (In the Footsteps of Duruflé), prelude , for organ - Dzintra Kurme-Gedroica
- Pako , for two pianos - Aivars Broks
- Panis Angelicus , (SATB) for mixed choir - Rihards Dubra
- Papardes zieds (Flower of Love) , SSAATBB for mixed choir - Pēteris Plakidis
- Par puriemi, par meziemi (Over Marshes, Over Forests) , SAAT/B) for mixed choir - Viktors Baštiks
- Parade March , for wind orchestra - Gunars Ordelovskis
- Parādīšanās (Appearances) , for piano quintet - Rihards Dubra
- Pārcēlājs (Pontifex), oratorio , for mixed choir (SSSAAATTTBBB), soli (SATB) and instrumental ensemble - Valdis Muktupāvels
