Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:4/4
K:G
['dgge dBGB', '=c (3Bcd (3ABc AF GDBD GABc dg']  
X:1
L:1/8
M:4/4
K:G
|: D2 |"G" B3 G"C" cBcA |"G" dgge dBGB |"C" c3 d"G" BGDB |"Am" BAAG"D" FdcA |"G" GDBD GABc | 
 dgge dBGB | dg (3Bcd"C" edcF |"D" AGGF"G" G2 :: AG |"D" (3FED AD FAcA |"G" BG G2 DGBg | 
"C" ec c2"G" dB B2 |"Am" BAAG"D" FdcA |"G" DB B2"D" Dc c2 |"G" d3 e dBGB | dg (3Bcd edcF | 
"D" AGGF"G" G2 :: Bc |"G" dggf g2 bg | g2 bg agfg |"Am" eaa^g a3 =g |"D" fed^c d3 =c | 
"G" (3Bcd BG"D" (3ABc AF |"G" GDBD GABc | dg (3Bcd"C" edcF |"D" AGGF"G" G2 :|  