Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:D
['F DFAF DGBG FAdF GEEF DFAF G/A/B/c/', 'fdd g fdaf gebg fdaf Tgeeg fdaf', 'fd f/g/a/f/']  
X:1
L:1/8
M:4/4
K:D
 F | DFAF DGBG | FAdF GEEF | DFAF G/A/B/c/ dg | fd e/f/g/e/ fdd :| g | fdaf gebg | fdaf Tgeeg | 
 fdaf gbag | fd AG FDD || g | fd f/g/a/f/ ge g/a/b/g/ | fd f/g/a/f/ geeg | fd AF G/A/B/c/ dg | 
 fd e/f/g/e/ fdd |]  