Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/4
Q:1/2=110
M:3/2
K:Gmin
['B A', 'd2 g- g']  
X:1
L:1/4
Q:1/2=110
M:3/2
K:Gmin
 d3/2 e/ d c B A | B3/2 c/ B A G ^F | G g ^f d g a | b d2 =e f2 | c3/2 d/ c d e (d/c/) | 
 B3/2 c/ B c d (e/f/) | g f b B A G | F B2 d c B :: b a2 d2 g- | g f2 B2 e | e d2 G2 c- | 
 c B B2 A2 | B f2 d2 g- | g =e2 a2 d- | d b2 g2 a | ^f3/2 g/ a f g2 |]  