Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:3/8
K:D
['GGG G2 A GGF E2 E EEE']  
X:1
L:1/8
M:3/8
K:D
 GGG | G2 A | GGF | E2 E | EEE | D2 B, | DB,C | B,2 z | EED | G>GB | AGF | E2 z | AGF | E>ED | 
 EDC | D2 z |]  