Nope.
In the two speech bubbles she sings the very first 9 seconds of “Sigma Boy”:
Сигма-сигма-бой, сигма-бой, сигма-бой
Каждая девчонка хочет танцевать с тобой
The only difference she makes is one extra “SIGMA”.
But it was — by an extra “SIGMA” in the very beginning.
It's just subtle, like...