Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['efga bagb agef', 'A G2']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
"^Moderately Quick" ef | g2 d2 efga | bagb agef | [dg]edg eddd | eaab a2 ef | gedg efga | 
 bagb agef | gage dged | BGAG G2 ef | g2 d2 efga | bagb agef | gage defg | a2 ab agef | gedg efga | 
 bagb agef | g2 d2 !slide![ee]3 d | BGAG [GB]2 |: [G,D]2- | [G,D]EGB A G2 (G/A/ | B)ded{e} dBGA | 
 [GB]2 [GB]2 A G2 A | BAGB AGEG | DG G2 A G2 A | Bded [gd]def | gage dged | BGA(G [GB]2) :|  