Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/16
M:2/4
K:none
['cAa2 agfe dbgd B2>d2 cafd', 'ABB2 dcc2 eff2']  
X:1
L:1/16
M:2/4
K:none
[K:G]"G" g2Bc d2ed | d2GA B2cB |"D7" BA^GA E2>F2 |"G" AGFG DGBd | g2Bc d2ed | d2GA B2cB | 
"D" AFdA fdef |"_?" d2d2 d2 z2 ::"D7" cAa2 agfe |"G" dbgd B2>d2 |"D7" cafd A2>c2 |"G" BgdB G2>B2 | 
"D7" cAa2 agfe |"G" dbgd B2>d2 |"D7" cafd Acfa |"G" g2g2 g2 z2 ::[K:C]"C" GceG c2e2 | cegc e2g2 | 
"G7" fadf BdGB |"C" ceGc EGCE | GceG c2e2 | cegc e2g2 |"G7" fadf BdGB |"C" c2c2 c2 z2 :| 
[K:G]"E7" e2^ce f2e2 |"Am" efed c2c2 |"F7" A^GAB cBcd |"E" .e4 z4 |"D7" d2^cd e2d2 |"G" dedc B2B2 | 
"D7" A^GAB cDEF |"G" .G4 z4 |:[K:C]"F" GAA2"G7" ABB2 |"C" dcc2 !>!G4 |"G7" eff2 d^cd2 | 
"C" dee2 cBc2 |"F" GAA2"G7" ABB2 |"C" dcc2 !>!G4 |"G7" eff2 dcBd |"C" c2c2 c2 z2 :|  