Jazz and light music were the primary focus of Momotenko's early career. These soon were supplanted by works that demonstrated his growing commitment to
contemporary music. At first, his compositions explored the possibilities of sound that resulted from the combination of acoustic and electronic instruments. This developed into a creative shift into
sonology and post-graduate studies at the
Royal Conservatory of The Hague. Momotenko composed a variety of multimedia musical works, including for robots, during this period. Increasing possibilities in digital sound and ease in working with these inversely resulted in decreasing interest from audiences; this exhaustion became palpable to Momotenko himself. At the start of his career in the Netherlands, Momotenko avoided composing for choirs, a reaction that was prompted by having been over-saturated with choral singing in his youth. Nevertheless, he did enjoy performing as a chorister in his student years. An invitation to compose a celebratory work for the forthcoming inauguration of a former abandoned monastery into a public building caused the composer to reflect: Personally, I experienced [the secular inauguration of this abandoned monastery] as a tragedy because another monastery was downhowever, in the Netherlands it seems almost "normal" that abandoned churches and monasteries were sold or demolished... So, I couldn't write any "festive" note, and this led to a dark choral piece. But still I remember this moment that changed my perspective on composition completely. As preparation for his musical contribution to this event, Momotenko listened to
Alfred Schnittke's Choir Concerto. Although the work was composed while Momotenko lived in the Soviet Union, censorship at the time prevented his acquaintance with it. His elation over the music's quality and serious theme was coupled with a personal epiphany to return to the roots of musical composition, without the need of mechanical and electronic intermediaries. "This felt like returning home", he later said. In recent years, Momotenko has studied
Znamenny and
Byzantine chant. Both styles were unknown to him in his youth in the Soviet Union. One of the products of his studies has been the choral work
Na Strastnoy, which sets on verses by
Boris Pasternak; it is based on the former style of chant. After composing it, Momotenko said his life changed. Through his knowledge of chant, he said he better understood the resources that composers like
Pyotr Ilyich Tchaikovsky,
Sergei Rachmaninoff, and
Igor Stravinsky drew upon in their work. He regretted not knowing chant sooner and not having the direct connection to it that Russian composers in the 19th century had. Comparatively speaking, he said, Soviet composition students of his time had been "raised on dry rations" that were required to be in accord with the tenets of
socialist realism. Momotenko has since stated that computers encourage passivity in their users and that he does not compose music with their aid in order to avoid distractions. Aside from music for electronics and choirs, Momotenko's output includes works for orchestra,
piano duet, and organs. ==Personal life==