Editing 1955 in music (section)

===Compositions===
*[[Milton Babbitt]] – ''Sonnets'' (2), for baritone voice, clarinet, viola, and cello
*[[Jean Barraqué]] – ''Séquence''
*[[Luciano Berio]]
**''Mimusique No. 2'' for orchestra
**''Mutazione'' for tape
**Quartetto
**Variazione for chamber orchestra
*[[Arthur Bliss]]
**''Meditations on a Theme by John Blow'', Op. 118
**Violin Concerto, Op. 111
*[[Ernest Bloch]] – Proclamation, B.91
*[[Pierre Boulez]] – ''[[Le Marteau sans maître]]''
*[[York Bowen]] – Rhapsody for Viola and Piano in G Minor
*[[Mario Castelnuovo-Tedesco]]
**''Tre Preludi mediterranei'', Op. 176
**''Escarramán'', Op. 177
*[[Eric Coates]] – ''[[The Dam Busters March]]''
*[[Henry Cowell]] – Symphony No. 12
*[[George Crumb]]
**''Diptych'' for orchestra
**Sonata for solo cello
*[[Mario Davidovsky]]
**Quintet for Clarinet and Strings
**''Suite Sinfonica Para "El Payaso"'' for orchestra
*[[Einar Englund]] – Piano Concerto No. 1
*[[Ferenc Farkas]] – ''Bukki Varlatok''
*[[Gerald Finzi]] – Cello Concerto
*[[Henryk Górecki|Henryk Mikołaj Górecki]] –
**Four Preludes, Op. 1
**Toccata, Op. 2, for two pianos
*[[Camargo Guarnieri]]
**''Poemas afro-brasileiros'' (3), for voice and orchestra
**''Ponteios'', vol. 3, for piano
**Sonata No. 2, for cello and piano
**Songs (2), for voice and piano
*[[Howard Hanson]] – Symphony No. 5, Op. 43, ''Sinfonia Sacra'' (premiered February 18 in Philadelphia)
*[[Hans Werner Henze]] – Symphony No. 4
*[[Vagn Holmboe]]
**String Quartet No. 5, Op. 66
**Cantata No. 9
*[[Alan Hovhaness]] – Symphony No. 2 ''Mysterious Mountain''
*[[Wojciech Kilar]]
**''Small Overture'' (''Little Overture'') for symphony orchestra
**''Symphony for Strings''
*[[Zoltán Kodály|Zoltan Kodaly]] – ''[[Nemzeti dal]]''
*[[Osvaldo Lacerda]] – ''Miniaturas de Adelmar Tavares'' (4), for voice and piano
*[[Witold Lutosławski]] – ''Dance Preludes'' (2nd version for clarinet and chamber group)
*[[Bohuslav Martinů]]
**''Gilgameš'' (choral work based on the ''[[Epic of Gilgamesh]]'')
**''[[The Frescoes of Piero della Francesca]]'' (''Les fresques de Piero della Francesca'', orchestral; composed)
**Oboe Concerto
*[[Darius Milhaud]] – Symphony No. 6
*[[Luigi Nono]]
**''Canti per tredeci'' for 13 instruments
**''Incontri'' for 24 instruments
*[[Per Nørgård]]
**Symphony No. 1 ''Sinfonia austera''
**Trio No. 1, Op. 15
*[[Walter Piston]] – Symphony No. 6
*[[Edmund Rubbra]] – Piano Concerto
*[[William Schuman]] – ''Credendum''
*[[John Serry Sr.]] –
** ''[[American Rhapsody]]'' – for Stradella Accordion
** ''Petite Tango'' – for Stradella Accordion
** ''Tarantella'' – for Stradella Accordion revised
*[[Fela Sowande]] – ''African Suite for string orchestra''<ref>{{cite journal|journal=Nsukka Journal of the Humanities|title=Composers in Nigeria|publisher=Faculty of Arts, University of Nigeria|issue=13|year=2003|page=155}}</ref>
*[[Karlheinz Stockhausen]] – ''[[Klavierstücke (Stockhausen)#Klavierst.C3.BCcke V.E2.80.93X: variable form|Klavierstücke V–VIII]]''
*[[Igor Stravinsky]] – ''[[Canticum Sacrum]]''
*[[Alexandre Tansman]]
**''Concerto for Orchestra''
**''Capriccio for Orchestra''
*[[Michael Tippett]]
**[[Piano Concerto (Tippett)|Piano Concerto]] (composition completed)
**Sonata for Four Horns
*[[Ernst Toch]] – Symphony No. 3
*[[Ralph Vaughan Williams]] – [[Symphony No. 8 (Vaughan Williams)|Symphony No. 8 in D minor]]
*[[Heitor Villa-Lobos]]
**[[String Quartet No. 16 (Villa-Lobos)|String Quartet No. 16]]
**[[Symphony No. 11 (Villa-Lobos)|Symphony No. 11]]
*[[William Walton]]
**''Johannesburg Festival Overture''
**Score for [[Richard III (1955 film)|''Richard III'' (film)]]
*[[Franz Waxman]] – Sinfonietta for Strings and Timpani
*[[Iannis Xenakis]] - ''[[Pithoprakta]]'' for orchestra