Complex sentence: On September 24, Iveta performed her new single called "Depi Nor Irakanutyun" at Miss Armenia Beauty Pageant and the next day, via her official YouTube account, she released the music-video of her new song.
Split into simpler sentences: On September 24, Iveta performed her new single called "Depi Nor Irakanutyun" at Miss Armenia Beauty Pageant. On the next day, via her official YouTube account she released the music-video of her new song.