Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:3/4
K:Amix
['A>B c2', 'e>c B2 A2 a>g f2 e2 A>B'  
X:1
L:1/8
M:3/4
K:Amix
 A>B | c2 a2 f>e | c2 A2 A>B | c2 e>c BA | B4 A>B | c2 a2 f>e | c2 A2 A>B | c2 e>c B>c | A4 :: 
 e>c | B2 A2 a>g | f2 e2 A>B | c2 e>c BA | B4 e>c | B2 A2 a>g | f2 e2 A>B | c2 e>c B>c | A4 :|  