Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
Q:1/8=180
M:2/2
K:G
['G2 BG DGBG FGAB c2 Bc dggf', 'gagf d2']  
X:1
L:1/8
Q:1/8=180
M:2/2
K:G
 G2 BG DGBG | FGAB c2 Bc | dggf d2 eg | fdcA BGAF | G2 BG DGBG | FGAB c2 Bc | dggf d2 eg | 
 fdcA BGG z || gagf d2 ef | gfga bgaf | gagf d2 eg | fdcA BGG z | gagf d2 ef | gfga bgaf | 
 gbag fdeg | fdcA BGAF |"^last time" G8 |]  