Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
Q:3/4=30
M:3/4
K:G
['DG (A2 F).G.A.B (AB/)c/ B2 d>G |{G}', 'BGE (AF) D2 (FG) (AB) E2 D4']  
X:1
L:1/8
Q:3/4=30
M:3/4
K:G
 DG | (A2 F).G.A.B | (AB/)c/ B2 d>G |{G} F3 GFE | D4 DG | .G2 .F.GA.B | (GB/)c/ B2 dG | Ec B2 A2 | 
 G4 ||"^Slow" (FG) | A3 BGE | (AF) D2 (FG) | (AB) F2"^tr" E2 | D4 DG | (G2 F)GAB | (AB/)c/ B2 dG | 
 Ec B2 A2 | G4 |]  