Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:2/4
K:E
['E EF=GA B2 BB =cB^AA B2 z']  
X:1
L:1/8
M:2/4
K:E
 E | EF=GA | B2 BB | =cB^AA | B2 z B | A=GFE | D2 BA | =GFED | E2 z |]  