Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/16
Q:1/4=100
M:2/4
K:F
['c2AB c2f2 d2B2', 'c4 g2ef g2a2 b2ag a2f2 cdef g2a2']  
X:1
L:1/16
Q:1/4=100
M:2/4
K:F
 c2AB c2f2 | d2B2 Tc4 | c2BA B2AG | A2GF G2E2 | c2AB c2f2 | d2B2 c4 | f2ed e2dc | d2c=B c4 :| 
 g2ef g2a2 | b2ag a2f2 | cdef g2a2 | gfed c4 | c2AB c2f2 | d2cB c2A2 | b2ag a2gf | g2fe f4 |]  