Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:2/2
K:D
['ABdf (3efe', 'ABdf (3efe', 'fedB ABdf efde :|2 fgfe d2 dB']  
X:1
L:1/8
M:2/2
K:D
 d2 fd BAFB | AD (3FED FAAB | defd BAFB |1 ABdf (3efe dA :|2 ABdf (3efe de |: faag fd (3Bcd | 
 g3 a bgeg |1 faag fedB | ABdf (3efe de :|2 f3 e dedB | ABdf (3efe dA |:"^variations" defd BAFB | 
 AD (3FED FA A2 | d2 fd BAFB |1 ABdf edBc :|2 ABdf efde |: faag fdef | gfga beeg |1 faag fedB | 
 ABdf efde :|2 fgfe d2 dB | ABdf edBc ||  