Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:2/2
K:Dmix
['c3 B c2 AB cBAG', 'dcAG FGAB', 'dcAG FGAB c2 AB cded cABG', 'afge fde^c']  
X:1
L:1/8
M:2/2
K:Dmix
 c3 B c2 AB | cBAG EG G2 | Add^c de=fe | dcAG FGAB | c3 B c2 AB | cBAG EFGE | DEFG ABcA |1 
 dcAG FGAB :|2 dcAG FD D2 |: eg g2 ag g2 | eg g2 edBd | ea a2 bgag | eaag edBd | eg g2 ag g2 | 
 egge defg | afge fde^c |1 dcAG FD D2 :|2 dcAG FGAB ||"^\"Variations:\"" cAAB cAAB | cAAG EG G2 | 
 Add^c de^fe | dcAG FGAB | cAAB cAAB | cAAG EFGE | D2 (3EFG ABcA | dcAG FGAB | c2 AB cded | 
 cABG EG G2 | Add^c d2 (3g^fe | dcAG FGAB | c2 AB cded | cABG EFGE | FD (3EFG ABcA | dcAG FD D2 |: 
 eg g2 ag g2 | eg g2 eA (3Bcd | eaag a3 g | ea a2 eA (3Bcd | efge afge | fde^c defg | afge fde^c |1 
 dcAG FD D2 :|2 dcAG FGAB ||  