Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:6/8
K:G
['c BcA GBG EDE G2 A BAG', 'gfe dBG']  
X:1
L:1/8
M:6/8
K:G
|: c | BcA GBG | EDE G2 A | BAG GBd | ecA Adc | BcA GEG | DEF GBc | dge dBA | BGG G2 :: D | 
 GBc dBA | Bdd def | gfe dBG | AGA BGE | GAG g2 g | fed gfe | dBG cBA | BGG G2 :|  