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The future perfect tense of sing is "will have sung."
It is "had sung".
Have /has sung He has sung his last song. They have sung all the songs
The present perfect is 'I have sung'
Sang is the past tense of sing. The present perfect tense of sing is I/We/You/They had sung; He/She/It has sung.
The past perfect tense is had sung.
It is not possible to be perfect.
Sing for the Day was created in 1979.
The future tense of sing is will sing.The future perfect tense of sing is will have sung.
A Perfect Circle
Present tense - singing Past participle - sung
I did not know Susan Boyle has Asperger's Syndrome, but no, we can not all sing with perfect pitch or melody. One of the things we all have in common is that we all are very different from one another.