Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:G
['(3(A/B/c/ d>)BA>B G2 D2 E>GF>A G4', '(3(D/E/F/ G)ABd ed']  
X:1
L:1/8
M:4/4
K:G
"^Moderate and stately" (3(A/B/c/ | d>)BA>B G2 D2 | E>GF>A G4 | E>GF>A G2 B2 | 
 A>EF>G A3 (3(A/B/c/ | d>)BA>B G2 D2 | E>GF>A G4 | c>cB>A d>BG>A | B2 A2 G3/2 (3(D/E/F/ |: 
[M:2/4]"^Two-step rhythm" G)ABd | ed d/d/B/c/ | dc c/c/A/A/ | ed d3/2 (3(D/E/F/ | G)ABd | ed d2 |1 
 ([fd]>e) ([fd]>e) | dd d3/2 (3D/E/F/ :|2 ([fd]>e) d(e/f/) | [gB][gB] [gB] |]  