Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/4
M:4/4
K:Dmix
['A A/G/', 'd c B A d']  
X:1
L:1/4
M:4/4
K:Dmix
 D | G G B d | A A/G/ F A | B B E G | A A/G/ F !fermata!D :| B | c d !fermata!e c | 
 B A !fermata!d d | e d c B | A d G G/F/ | E E/E/ D D/D/ | A A/G/ F !fermata!D | A A/B/ c d/G/ | 
 F E D |]  