Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:Ador
['g eA A/A/A edBc dBgB aBgB eA', 'edef g2']  
X:1
L:1/8
M:4/4
K:Ador
|: g | eA A/A/A edBc | dBgB aBgB | eA c/B/A e2 Bc | dBgB A3 :| f | edef g2 fg | ed d/e/f gdBd | 
 e2 ef g2 e/f/g | edgd BA A2 | edef g2 e/f/g | ageg a2 ga | b2 af gfed | B/c/d gd BAA ||  