Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['d2 Ad fdAF', 'fagf gbag']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 A | d2 Ad fdAF | GFEF GABc | d2 Ad fdAF | GBAG FD D2 | d2 Ad fdAF | GFEF GABc | d2 Ad fdAF | 
 GBAG FDD :| e | fagf gbag | fagf gfeg | fagf gbag | fgeg fddA | fagf gbag | fagf gfeg | 
 fedc dcBA | GABc dgf :|  