Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:4/4
K:G
['B2 B2 G2 (AB) cBce d2', '', 'cBce d2']  
X:1
L:1/8
M:4/4
K:G
 (DG) | B2 B2 G2 (AB) | cBce d2 B2 | B3 A G2 (FG) | AD^CD EFGA | B2 B2 G2 (AB) | cBce d2 (GA) | 
 BGcB A2 A>F | G2 [Bg]2 [Bg]2 :| (GB) |: d3 B cBce | d2 B4 A2 | G3 A G2 E2 | G6 (GA) | 
 B2 B2 G2 (AB) | cBce d2 (GA) | BGcB A2 A>F |1 GDEF GABc :|2 G2 [Bg]2 [Bg]2 |]  