He was part of the Russian boy band Ivanushki International, which he left in 1998, striving for a solo career.
[citation needed] With Warsaw Minskoff Theatre took part in musical Metro with performances in Europe and on Broadway, New York.
Despite the widespread popularity of the group, Sorin decided to leave in 1998 after recording the album Your letters.
[4] On the morning of 1 September 1998, Sorin jumped from the sixth-floor balcony of 12 Veresaev Street.
In 1999, Ivanushki International released compilation Фрагменты жизни ("Fragmenti iz zhizni", "Fragments of Life"), which contained his best songs with Ivanushki, songs he had written prior to joining Ivanushki, his vocal poems, and a song dedicated to him, "Я тебя никогда не забуду" ("Ya tebya nikogda ne zabudu", "I Will Never Forget You").