Born in St Petersburg, Alexei Aslanov graduated from the Glinka Choir College in 2012 and the Rimsky-Korsakov St Petersburg State Conservatory (Valentin Nesterov’s choral conducting class in 2017 and Alexander Polishchuk’s opera and symphony conducting class in 2018).He has taken part in masterclasses held by Vassily Sinaisky, Bruno Weil, Dorian Wilson, Teodor Currentzis and Yuri Simonov.

Alexei Aslanov has appeared with the St Petersburg Youth Symphony Orchestra, the St Petersburg State Symphony Orchestra Classica, the Nur-Sultan (Astana) Philharmonic Orchestra, the Safonov Academic Symphony Orchestra of the North-Caucasian State Philharmonic named after V.I. Safonov, the Moscow Philharmonic Orchestra, the Tatarstan National Symphony Orchestra, the Symphony Orchestra of the Bolshoi Theatre of Belarus, the Russian National Youth Symphony Orchestra.

Made his debut at the Mariinsky Theatre in 2007 as an opera soloist (Miles in The Turn of the Screw); in the 2018–19 season the musician stood at the helm of the Mariinsky Orchestra for the first time, and from that same season he worked as a conductor trainee, currently he serves as a guest conductor of the orchestra.

In 2020 - 2023, Alexei Aslanov was an Artistic Director and General Director of the Sochi Symphony Orchestra, conducting a number of significant concert events. Has taken part in Denis Matsuev’s Crescendo festival. Since 2022 he has been the artistic director, conductor, ideological inspirer and one of the organisers of major festivals and other projects that are carried out in Sochi with the support of the Presidential Fund for Cultural Initiatives and the Alexei Aslanov Charitable Foundation.

In 2022 the artist organised and headed the 1st Sochi Classical Music Festival. In the same year the Opera Classics in Sochi festival was held. In 2023 the major events included the Rosa Khutor. Classics festival.