Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/4
Q:1/4=100
M:3/2
K:C
['F, F,']  
X:1
L:1/4
Q:1/4=100
M:3/2
K:C
"_This is BASS CLEF - see note" D,2 | (F,2 E,2 D,) (E,/D,/) | ^C,2 F,2 A,2 | (B, A, G, F, E,) D, | 
 C,3 | E,2 F,2 D,2 | (A,3/2 G,/ F,2 C, D, | G,4) A,2 | F,2 E,4 | F,4 |[M:2/2] F,2 | A, G, F, C, | 
 (F, E, D, C, | D, E, F,) G, | A,4 | z2 z D, | F, F, A, A, | F,3 D, | A,,3 E, | F, F, F, G, | 
 A, A, A, F, | E,3 C, | D,4 |]  