I will explain a few situations :
- It is often the case that I listen to a song which doesn't impress me in the first minute or so but as it progresses, I like it
- A trained batsmen struggles in the initial overs to score, even to hold the wicket but as the game progresses, he 'sets' himself on the pitch and then is invincible
So if I take the situation 1, how would I say :
"That song is ...."
The above situations, logically, seem unrelated so we may not have same/similar phrase or idioms.