Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
Q:1/4=120
M:2/2
K:A
['e2 d2', 'B2 G2 [A,A]3']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:A
"^Quick" ([de-]2 | [ee]2) [ee]f [ee]2 [de]2 | c2 A4 (ef | =g2) f2 e2 d2 | [ee]3 (A [ee]2) (ef) | 
 =gged e3 f | e2 d2 c2 AB | c2 Ac B2 G2 | [A,A]3 (A, [A,A]2) || AB | [ce][ce][Ae][ce] [Be]2 A2 | 
 cBAF [A,E]4 | (c A2) c B2 G2 | [A,A]3 [A,A]- [A,A]2 !slide![ce]2- | [ce]2 [ce]2 [Be]2 [Ae]2 | 
 cBAF [A,E]4 | [ce]2 Ac B2 G2 | [A,A]3 (A, [A,A]2) ||  