Develop musical pieces that align with the predetermined guidelines.
'Variational', 'Compound Ternary'  
X:1
L:1/8
M:4/4
K:D
{A} F>G | A2 A>B A2 F>G | A>FA>B A3 B | A>GF>E D>EF>G | A2 A>F A2 d>c | B2 B>A B2 F>A | 
 B>AB>c B3 c | B>AF>E D>EF>A | B2 B2 B2 b2 | b>af>b a>fe>g | f>ed>f (3efe de | (3gfe d>B A>Fd>F | 
 A2 A>F A2 d>c | B2 A>B d3 (e | e>)Bd>(e e)ffe | d>BA>F d2 F2 | E3 F D2 f>g || a2 a>b a2 f>g | 
 a>fa>b a3 b | a>gf>e d>ef>g | a>d (3efg a>df>a | b2 b2 b2 f>a | b>ab>c' b3 c' | b>af>e d>ef>a | 
 b2 b2 b2 f>(b | b>)af>b a>fe>g | f>ed>f (3efe de | (3gfe d>B A>F d>F | A2 A>F A2 d>c | 
 B2 A>B d3 (e | e>)Bd>(e e)ffe | d>BA>F d2 F2 | E3 F D2 F>G || A2 A>B A2 F>G | A>FA>B A3 B | 
 A>GF>E D>EF>G | A2 A>F A2 d>c | B2 B>A B2 F>A | B>AB>c B3 c | B>AF>E D>EF>A | B2 B2 B2 (b2 | 
 b>)af>b a>fe>g | f>ed>f (3efe d>e | (3gfe d>B A>Fd>F | A2 A>F A2 d>c | B2 A>B d3 (e | 
 e>)Bd>(e e)ffe | d>BA>F d2 F2 | E3 F D2 (3efg || a>d (3efg a>d (3efg | a>d (3efg a>df>a | 
 a>gf>e d>ef>g | a>d (3efg a>df>a | b2 b2 b2 f>a | b>ab>c' b3 c' | b>af>e d>ef>a | b2 b2 b2 f>b | 
 b>af>b a>fe>g | f>ed>f (3efe d>e | (3gfe d>B A>F d>F | A2 A>F A2 d>c | B2 A>B d3 (e | 
 e>)Bd>(e e)ffe | d>BA>F d2 F2 | E3 F D2 f>g || a>d (3efg a>d (3efg | a>d (3efg a>df>a | 
 a>gf>e d>ef>g | a>d (3efg a>df>a | b2 b2 b2 f>a | b>ab>c' b3 c' | b>af>e d>ef>a | b2 b2 b2 f>b | 
 b>af>b a>fe>g | f>ed>f (3efe d>e | (3gfe d>B A>F d>F | A2 A>F A2 d>c | B2 A>B d3 (e | 
 e>)Bd>(e e)ffe | d>BA>F d2 F2 | E3 F D2 D2 ||  