Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:2/2
K:D
['A2 FA', 'cAAG (3FGA dA BAdB |1 AFEG FDDE']  
X:1
L:1/8
M:2/2
K:D
 A2 FA ABdf | edfe fddB | A2 FA ABdB |1 AFEG FDDB :|2 AFEG FDDE |: FAdA BAdA | (3Bcd ed cAAG | 
 (3FGA dA BAdB |1 AFEG FDDE :|2 AFEG FDDB ||  