Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/4
Q:3/4=55
M:6/4
K:C
['d2 g', 'B3/2 A/ G', 'B g']  
X:1
L:1/4
Q:3/4=55
M:6/4
K:C
"_No Key or Time Sigs" G2 B d2 g | d2 g B3/2 A/ G | A2 B e2 g | e2 d e2 g | G2 B d2 g | 
"^cr" d2 g B3/2 A/ G | c (d/c/)(B/A/) B (c/B/)(A/G/) | A2 G e2 d || g3 g3 | g3 B3/2 A/ G | 
 A2 c e2 g/a/ | b2 a e2 g | G2 B (d/B/)(d/B/)(d/B/) | d3 B3/2 A/ G | 
 c (d/c/)(B/A/) B (c/B/)(A/G/) | A2 G e2 d || g G B g G B | g G B g G B | g A B g A B | 
 g A B e2 d | g G B g G B | g G B g G B | c (d/c/)(B/A/) B3/2 A/ G | A2 G e2 d |]  