Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['gfe def gdc', 'G3 gba gfe def g2 G d=fe']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 gfe def | gdc B2 A | B/c/dB A/B/cA | B/c/dB A/B/cA | gfe def | gdc TB2 A | B/c/dB dBG | AFD G3 :: 
 gba gfe | def g2 G | d=fe dfe | dcB c2 C | ced cBA | BGd FED | Ege dBG | AFD G3"^*" :|  