Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/4
M:4/4
K:D
['', 'G F'  
X:1
L:1/4
M:4/4
K:D
 D |] G3/2 G/ G G | (A B) =c A | G F D ^C | D3 A | B A (B/=c/) d | =c B A G | F E F G | A3 A | 
 B (B/=c/) (d/B/) | (G3/2 F/) G (A/B/) | =c B A (G/E/) | D3 D | G G F (E/D/) | D3/2 =c/ B2 | 
 (D G/ G/) A B/A/ | G3 |]  