Matei's repertoire encompasses works from Classical, Romantic and French Impressionism. He is also highly regarded as an interpreter of 20th Century repertoire, and especially South African contemporary works, having introduced many pieces to audiences. He also conducts large choral works like Handel's Messiah and Haydn's Creation as well as concerts of opera arias.

Beethoven All symphonies
Berlioz Symphonie fantastique, Damnation of Faust and L'Enfant du Christ
Brahms All symphonies
Bruckner Symphonies 4, 5, 6, 7, 8 and 9
Bartók Concerto for orchestra and the Miraculous Mandarin
Dvořák Symphonies 7, 8 and 9
Debussy La mer, Images, Laprès-midi d'un faune et Nocturnes
C. Frank Symphony in d minor
Enesco Romanian Rhapsodies No I and 2; symphonies 1, 2 and 3
Haydn All symphonies
Mahler Symphonies 1, 2, 3, 4, 5, 6, 7 and 9
Mozart All symphonies
Mendelssohn "Scottish" and "Italian" symphonies
Prokofiev Romeo and Juliette Suite and symphonies 1 and 5
Rimsky-Korsakov Scheherazade, Capriccio Espagnol, Russian Easter Overture and Sinfonietta
Ravel Rhapsodie Espagnole, Alborada del graciozo, Bolero, Le tombeau de Couperin, La Valse, Ma Mère l'Oye and Daphnis et Chloé
Schubert All symphonies
Schumann All symphonies
Shostakovich Symphonies 1, 5, 6, 8, 9, 10 and 15
Saint-Saëns Organ Symphony
Tchaikovsky Symphonies 4, 5, 6 and Manfred
Stravinsky Pulcinella, Petrushka, Rite of Spring and Chant du Rossignol
Sibelius Symphonies 2, 3 and 5
R. Strauss Don Juan, Till Eulenspiegels, Ein Heldenleben and Eine Alpensymphonie