Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:C
['D2 EAAB', '', 'age^f g2 (ga) ged^f (3(g^fg) af gedg']  
X:1
L:1/8
M:4/4
K:C
 BEA Dec |[M:2/2][K:C]SOSOO .!fermata!PMTCO(Med) | c2 Ac B2 GB | AGE^F (GE) D2 | EAAB cBcd | 
 eaa^f gedB | cA (3(AAA) BAGB | BGE^F GE D2 | EAAB cded | cABA A2 :| ea |:{a} agab ageg | 
 agbg age^f | g2 (ga) ged^f | (3(g^fg) af gedg | eaab ageg | agbg age^f | g^fga b2 (ag) | 
 ^fgaf gedB :|  