Can someone please help with these short phrases for a song?
I am guessing based on context so I am not sure if I am correct.

а у нас гуляночка
And we are having a little party

тройка белых лошадей.
three white horses - why does he use тройка instead of три

И стучат, стучат, стучат бокалы в такт
And ting, ting, ting wine glasses on the step

Ше не вмерла Украина, если мы гуляем так
No clue Ukraine, if we stroll so

скачет по поляночке
No clue

Any help would be appreciated. THanks all.