Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/16
M:2/4
K:A
['A2AB c2cd e2a2 e2>d2', 'e2a2 a=gf e2a2 e2>d2']  
X:1
L:1/16
M:2/4
K:A
 E2 | A2AB c2cd | e2a2 e2>d2 | c2A2 A2Bc | d2dB =G2E2 | A2AB c2cd | e2a2 e2>d2 | c2BA =GABG | 
 A4 A2 :| =gf | e2a2 a=gf | e2a2 e2>d2 | c2A2 A2Bc | d2dB =G2 gf | e2a2 a=gf | e2a2 e2>d2 | 
 c2BA =GABG | A4 A2 :|2 E2 | ABcd cdef | efga e2>d2 | c2BA =GABG | A4 A2 |]  