poco a poco bedeutet auf Englisch

bit by bit▼(small amount at a time)
adverb
[UK: bɪt baɪ bɪt] [US: ˈbɪt baɪ ˈbɪt]

gradually▼(in gradual manner)
adverb
[UK: ˈɡræ.dʒʊə.li] [US: ˈɡræ.dʒuːə.li]

little by little▼(a small amount at a time)
adverb
[UK: ˈlɪt.l̩ baɪ ˈlɪt.l̩] [US: ˈlɪt.l̩ baɪ ˈlɪt.l̩]

step by step▼(gradually)
adverb
[UK: step baɪ step] [US: ˈstep baɪ ˈstep]