Today we are going to talk about another polyphonic character that has two pronunciations, 会.

In the opening song (可能否), it means will, it indicates something that is going to happen, in such a case, it is an auxiliary verb, which means it must be used together with another verb, the main verb, otherwise it doesn’t make sense.

可能我撞了南墙才会回头吧, Maybe I won't turn back until I hit the south wall. To turn back is the main verb, and this auxiliary verb is used to describe the certainty of this action.
他不会来了. He will not come here.

The 2nd meaning is, good at doing something, capable of doing something, it is also an auxiliary verb in this case.
我会说中文, I can speak Chinese, speak is the main verb, and 会 is the auxiliary verb.
你特别会唱歌. You are very good at singing.

The third meaning is, to meet up, or to gather together, it’s could be a verb or a noun.
For example, 约会, to have a date, or a date.
开会, to have a meeting, or a meeting.

And the last meaning is, understanding.
体会, understanding from past experiences.
误会, misunderstanding.

And in terms of the 2nd pronunciation, it reads as kuai.
Ke-u-ai, with a fourth tone, kuai.
And when it reads as kuai, it means accounting.
会计 is accounting.