Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:4/4
K:D
['f z', 'a2 e2 b4 ^g2 e2 a2 a4']  
X:1
L:1/8
M:4/4
K:D
 a>a | a4 f z b z | a z (3(aaa) a z b2 | g z (3(ggg) g z a2 | f z d z ^g4 | a4 e2 c2 | 
 f2 (3(fff) d2 B2 | b>a^g>f e>dc>B | A2 a>a a2 |] e2 | b4 ^g2 e2 | a2 a4 .e.c | (dB).b.a .g.f.e.d | 
 c2 z2 a2 a>a | a>fb>a g>fe>d | B2 g4 b>b | a>bg>a f>ge>f | .d.c/.B/ (AG).F.E"^D.C." .D |]  