Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:4/4
K:D
['D2 FA', 'D2 de fffg fedc BABc B2 cd'  
X:1
L:1/8
M:4/4
K:D
 FE | D2 FA dAFD | CDEF GECE | D2 FA dcdf | edcB (3A/B/A/ (3G/F/E/ | D2 FA dAFD | CDEF G2 FG | 
 AdcB AGFE | (3D/E/D/ CE D2 | (3A,/B,/C/ | D2 FA dAFD | CDEF GEAF | D2 FA dcdf | 
 edcB (3A/B/A/ (3G/F/E/ | D2 FA dAFD | CDEF G2 FG | AdcB AGFE | (3D/E/D/ CE D2 |: de | fffg fedc | 
 BABc B2 cd | edef edcB | (3A/B/A/ ^GB A2 (3A/B/c/ | dcdf gdAF | GFGA B2 (3d/c/B/ | AdcB AGFE | 
 (3D/E/D/ CE D2 :|  