Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/8
Q:1/8=150
M:6/8
K:G
['D2 G GAG FDE FGA Bcd efg', 'ded A2 B cdc G2 A BcB'  
X:1
L:1/8
Q:1/8=150
M:6/8
K:G
"^allegretto" D2 G GAG | FDE FGA | Bcd efg | f3 d3 |"^5" c2 e ege | B2 d ded | cBc dFD | G3 G3 || 
"^9" B2 c ded | A2 B cdc | G2 A BcB | A2 G F2 D |"^13" GEC CEC | G3 G3 | AFD DFD | d3 B3 | 
"^17" cde efg | fad BGB | c/d/eA FDF | G3 G3 |]  