Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:6/8
K:G
['D G2 GGFG BA z z2']  
X:1
L:1/8
M:6/8
K:G
 D | G2 GGFG | BA z z2 D | G2 GGFG | BA z z2 G | d2 AcBA | G2 B/A/ A2 A | G2 GcBA | GBA G2 |]  