Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:3/8=110
M:6/8
K:Dmin
['d2 e f2 g aga', 'd^c=B A3 A2 =B T^c2 d e2']  
X:1
L:1/8
Q:3/8=110
M:6/8
K:Dmin
 d2 e f2 g | aga Tf2 e | d2 e f2 g | aga d3 :|"_'Play this part once over'" gfe d2 d | d^c=B A3 | 
 A2 =B T^c2 d | e2 f e2 e | gfe d3 | d^c=B A3 | A2 =B T^c2 d | e2 f d3 |]  