Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:4/4
K:C
['B2 Bc dBcA BEEG', 'd2 fd Adfd']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:D] .abcFDFA B2 Bc | dBcA BEEG | FDFA BABc | dABG FD D2 | FDFA B2 Bc | dBcA BEEG | 
 (3FED EF GABc | dABG FD D2 || d2 fd Adfd | Adfd eB B2 | d2 fd Adfd | (3fga eg Adfd | d2 fd Adfd | 
 Adfd eB B2 | g2 fd (3efg fe | BGAG FD D2 |]  