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I'd be happy if someone would answer my questions. Thanks in advance.

Are the following 2 sentences correct? If so, what's the difference?

A: He was moved when he heard his daughter sing the song in the concert hall.

B: He was moved when he heard his daughter singing the song in the concert hall.

I feel "his moving" is possible when he heard his daughter's song to the end, so A is OK and B is not so good. Am I right?
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Magic-dragonI'd be happy if someone would answer my questions. Thanks in advance.

Are the following 2 sentences correct? If so, what's the difference?

A: He was moved when he heard his daughter sing the song in the concert hall.

B: He was moved when he heard his daughter singing the song in the concert hall.

I feel "his moving" is possible when he heard his daughter's song to the end, so A is OK and B is not so good. Am I right?
Both are valid. The first could be a statement of his feelings during or after the song; the second is purely a statement of his feeling while the song was being sung.
Comments  
Hi MD,

I also feel that a is correct.
 Feebs11's reply was promoted to an answer.