Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
Q:1/8=120
M:2/4
K:A
['ef ec BA', 'Bc/B/ AB/A/ fe/f/ e/c/B e/c/B c/B/A']  
X:1
L:1/8
Q:1/8=120
M:2/4
K:A
 A | B>f ef | ec BA | Bc ef | ec BA | af ef | ec BA | Bc e/f/e/c/ | BAA :| c/B/ | AG/A/ Bc/B/ | 
 AB/A/ fe/f/ | e/c/B e/c/B | c/B/A ec/B/ | A2 Bc/B/ | AB/A/ fe/f/ | e/c/B e/c/B | c/B/A A :|  