Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:4/4
K:D
['(3DDD FD EFGB (3AAA ec dcAG FAdA', 'ADFG Adcd'  
X:1
L:1/8
M:4/4
K:D
 (3DDD FD EFGB | (3AAA ec dcAG | FAdA (3Bcd AF | GBAG FGEF | (3DDD FD EFGB | (3AAA ec dcAG | 
 FAdA (3Bcd eg |1 fdec dBAF :|2 fdec defg || afdc Bggf | edcB ADFG | Adcd Bcdg | fagf (3eee fg | 
 afdc Bggf | edcB ADFG | Adcd (3Bcd eg |1 fdec defg :|2 fdec dBAF ||  