Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:4/4
K:A
['af ecAc B2 cB ABcd e3/2 z/', 'BE E2 GEGA Bcdf']  
X:1
L:1/8
M:4/4
K:A
 af | ecAc B2 cB | ABcd e3/2 z/ ag | fedf ecAc | (3dcB (3cBA EGBc | dE (3EEE cE (3EEE | BAGA Bcdf | 
 egaf ecAc | (B^AB)c =A2 :| cA | BE E2 GEGA | Bcdf ecA(c | [Fd]3) B c3 A | B3 c BAGA | BE E2 GEGA | 
 Bcdf ecAc | AGAc (3dcB (3cBA | B3 c A2 cA | BE E2 GEGA | Bcdf ecAc | dafd cdec | B3 c BAGA | 
 BE E2 GEGA | Bcdf ecAc | AGAc (3dcB (3cBA | B3 c A2 ||  