Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
Q:1/8=80
M:6/8
K:none
['c3{e} A2', 'g2 e']  
X:1
L:1/8
Q:1/8=80
M:6/8
K:none
|: e |{g} GAB{gf} g2 a | gfe{gf} g3 |{Gdc} d2 e{g}dcd |{gBd} B3{e} G2 |1{d} B ||1{g} ABc{ag} a3 | 
 gfe{ag} a3 | e3 f{g}ece |{gcd} c3{e} A2 :|2 a | ece{g}A{d}ce |{e} dcd{g}GBd |{e} A{d}ce{g}eae | 
{gcd} c3{e} Ae |]:{g} c{d}A{e}A{g}A{d}A{e}A |{g} A{d}A{e}A{g}c{d}A{e}A |{g} c{d}A{e}A{g}A{d}A{e}A | 
{gcd} c3{e} A2 |1{d} c ||1{g} dB{G}B{g}B{d}B{e}B |{g} B{d}B{e}B{g}dB{G}B |{g} dB{G}B{g}B{d}B{e}B | 
{Gdc} d2 f{gef} e2 d :|2 a | ece{g}A{d}ce |{g} dcd{e}GBd |{e} A{d}ce{g}eae |{gcd} c3{e} A2 |]: g | 
{a} G{d}G{e}G{gBd} B2{e} G |{g} Bd{e}G{g}B{d}G{e}G |{g} Bd{c}d |1{g} ded ||2{g} dB{d}G | 
{gBd} B3{e} G2 a ||1 A{d}A{e}A{gcd} c2{e} A |{g} ceA{g}c{d}A{e}A |{g} ce{A}e{g}efe | 
{gcd} c3{e} A2 :|2 ece{g}A{d}ce |{g} dcd{e}GBd |{e} A{d}ce{g}eae |{gcd} c3{g} efg |] 
 G{d}G{e}G{gf} g3 | G{d}G{e}G{gf} g2 e |{g} G{d}G{e}Gg{a}fg |{gBd} B3{e} G2 B | 
{g} A{d}A{e}A{ag} a3 | A{d}A{e}A{ag} a3 | A{d}A{e}Aaga | A{d}A{e}Ag{a}fg |] G{d}A{e}A{gf} g2 e | 
 agf{gf} g2 e |{g} dBd{g}dfd |{gBd} B2{e} G2 a | ece{g}dBd |{g} c{d}A{e}c{g}B{d}G{e}B | 
{g} A{d}ceaed |{gcd} c3{e} A2 |]  