Aivars Kalējs has written more than 100 opuses of symphonic, organ, piano, chamber and choir music.
[1][2] His works are included in many CD's of the great musicians and collectives such as Iveta Apkalna, Andris Nelsons, Maxim Novikov and Latvian National Symphony Orchestra.
In 2017, Vita Kalnciema released retrospective CD Flashes of Aivars Kalējs organ music recorded in Riga Cathedral.
He has performed solo recitals, included participating in dozens of important international organ festivals, and toured with various ensembles throughout North America, Colombia,[5] almost all European countries, and Asia, including prestigious venues as Notre Dame de Paris (only Latvian who had three recitals there), Musikverein, West Point Military Academy Cadet Chapel with largest pipe organ in the world.
[7] Kalējs has worked with such musicians as conductors Andris Nelsons, Māris Sirmais, Andres Mustonen, Pierre Cao, Sigvards Kļava, Normunds Šnē, Imants Kokars, Andris Veismanis and Tovy Lifshitz, violinists Gidon Kremer, Valdis Zariņš and Elina Buksha, violist Maxim Novikov, cellist Alexander Kniazev, Eleonora Testeļeca, pianist Polina Osetinskaya, singers Inese Galante, Inga Kalna, Inga Šļubovska-Kancēviča, Kristīne Gailīte, Ieva Parša, Martina Doehring, Lina Mkrtchyan, Egils Siliņš, Jānis Sproģis, Ingus Pētersons, Rustam Yavaev, Sergejs Jēgers, flutists Dita Krenberga and Ilze Urbāne, oboe player Uldis Urbāns, saxophonist Artis Sīmanis and Riga Saxophone Quartet, such collectives as Kremerata Baltica, State Choir Latvija, Latvian Radio Choir, Chamber Choir AVE SOL, Choir Kamēr and many national symphony orchestras.