Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:A
['efga A/A/A cA', 'Aefg afba geag fdaf eAce d B3']  
X:1
L:1/8
M:4/4
K:A
 cAdA efga | A/A/A cA BG E/E/E | EAcd efga | ecdB Afed | c3 d efga | A/A/A cA B E3 | EAcd efga | 
 ecdB Aefg || afba geag | fdaf eAce | d B3 ceAc | B3 c defg | aA A/A/A eAce | aAge fece | 
 d/d/d fd ceaf | ecdB Afed ||  