Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/4=42
M:4/4
K:Ab
['c2 BA']  
X:1
L:1/8
Q:1/4=42
M:4/4
K:Ab
 z6 z A | c2 c2 d3 d | e e3 d3 e | e2 e2 d2 ed | c2 BA c2 BA | c2 c2 d3 d | e e3 d2 e2 | 
 e2 e2 d2 ed | c2 BA c2 B/A/F/E/ | c2 BA A4 | c2 BA F4 | A2 FE E2 FG | A2 Bc d d3 | c2 BA A4 | 
 c2 BA F4 | A2 FE E-E/>F/ GA | B3 A A A2 |]  