It's like this:

Approximate translation:

The भला there gives a sense of <em style="color: rgb(34, 34, 34);">why on earth</em> instead of a simple why. It's colloquial.

Bhala ( some time we use it - ) mean good / well

Jaati hoon main (I'm leaving)Jaldi hai kya(What's the hurry)Dhadke jiya(My heart is beating fastW)oh kyun bhala(Why is that)