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:Edor
['B2 cd B2 B2 A2', 'B2 AG', 'A2 B2 cd B2 AB E2 FG', 'B2 BB G2 AG FEFG']  
X:1
L:1/8
M:4/4
K:Edor
|:"^A" B2 cd B2 B2 | A2 G2 AG F2 | B2 cd B2 B2 | A2 GA F4 ::"^B" E2 FG A2 A2 | F2 GA BAB=c | 
 B2 AG F2 EF | B2 AG FAAB | E2 FG A2 A2 | F2 GA B3 =c | B2 AG FAAB |1 GEFD EBBG :|2 GEFD E2 BB || 
"^C" B2 cd B2 A2 | B2 cd B3 B | Bdcd B2 A2 | B2 cd B2 AB ||"^D" E2 FG A2 =c2 | B2 AG FGFE | 
 B2 BB G2 AG | FEDE F2 EF | B2 BB G2 AG | FEFG EBBB | =c2 B2 G2 BG | FEDE FFEF | B2 BB G2 AG | 
"^*" FEFG E3 B ||"^*3rd time:" FEFD B2 BB | G2 AG FEFG |:"^C" B2 cd B2 A2 | B2 cd B3 B | 
 Bdcd B2 A2 | B2 cd B2 AB :|  