Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:D
['[Dd]2 [Dd]>[Dd]', 'z2 [Af][Ag] [Aa]2 [Aa]>[Aa] [Aa]2 [Ab][Aa] [Ag]2']  
X:1
L:1/8
M:4/4
K:D
 A/A/A/ | [Dd]2 [Dd]>[Dd] [Dd][Ae][Af][Dd] | [Ae]2 [Ae]>[Ae] [Ae][Af] [Ag][Ae] | 
 [Af]2 [Af]>[Af] [Af][Aa] [Ag][Af] | edcB AGFA | [Dd]2 [Dd]>[Dd] [Dd][Ae][Af][Dd] | 
 [Ae]2 [Ae]>[Ae] [Ae][Af] [Ag][Ae] | [Af][Aa] f[Dd] [Ae][Ag] [Af][Ae] | 
 [Dd]2 [Dd]>[Dd] [Dd] z z2 || [Af][Ag] [Aa]2 [Aa]>[Aa] [Aa]2 | [Ab][Aa] [Ag]2 [Ag]>[Ag] [Ag]2 | 
 [Aa][Ag] [Af]2 [Af]>[Af] [Af][Aa] | [ag][Af] [Ae]d cBA[GA] | [FA][DA] [Dd]2 [Dd]>[Dd] [Dd][Ae] | 
 [Af][Dd] [Ae]2 [Ae]>[Ae] [Ae][Af] | [Ag][Ae] [Af][Aa] [Af][Ad] [Ae][Ag] | 
 [Af][Ae] [Fd]2 F3 [Fd]/ [Fd] z :|  