Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
M:4/4
K:C
['[M:6/8][K:D] ea a da ue A x', 'fed cAA', 'cee dff']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:D] ea a da ue A x ud a e aebe f e"^Langstrom's Pony""^Mooncoin" fa[Q:1/8=160]"^A modal" .g |: 
 fed cAA | eAA cBA | fed cAA | BGB dBG | fed cAA | cAA efg | faf gfe | dBG Bcd :| cee dff | 
 cee ecA | cee dff | dBG Bcd | cee dff | cAA efg | faf gfe | dBG Bcd :|  