the boy i loved

[nozaki]

my overall feeling of the piece is that it is mostly general and oddly specific... as the other crits have said, novelty is hard to come by when writing love poems. perhaps narrowing the timeframe or emotion of the poem would help refine it. i like where you went with this, however harsh i may come across, would just like some embellishment and sharper references. looking forward to revisions!

the boy i loved, he sang for me:
i danced and smiled happily. -this stanza suffers for lack of detail. instead of generalization after generalization, a specific memory... 
the joy i had could not compare;
i've searched for it most everywhere -these two lines need to be grounded... compared to what? ' most everywhere' feels like an easy substitution for a more prescient phrase. 

the time we shared could not be priced.
the seconds we had made my life. -verb placement is weird here; and i am not a fan of the extended metaphor, again too general for me to fully appreciate the beauty of what you are trying to say. 
but like all good things, we would fade. -transition into a different tense is not jarring, but a bit strange considering that the last stanza is again speaking from the past stanza. 
his song would cease, my heart would break. -first half of this line is very lovely and the second half, 'my heart would break,' is very tired. 

i cried and wept, "my musician!" 
he was gone, left on a mission. -oddly specific, 'mission'. doesn't fit with the musical motif. 
i wished him well, i said goodbye -noticed that you have a penchant for repetition within lines. i think this is where the most improvement can be made, just a tightening of existing lines. 
he didn't look back but i heard him sigh. -i rather enjoy the last minute pivot into the boy, adds a small but needed dose of perspective to an otherwise very self-centered piece.