Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:Amin
['A>ba<g ^f>de>^c', 'e>d c2'  
X:1
L:1/8
M:4/4
K:Amin
 B | A>ba<g ^f>de>^c | d>Bg>d B>AG>B | A>ba<g ^f>de>^c | d>Bg>B A2 A>B | A>ba<g ^f>de>^c | 
 d>Bg>d B>AG>B | A>ba<g ^f>de>^c | d>Bg>B A2 A || a | A>Bc<d e>d c2 | d>Bg>d B>AG>B | 
 A>Bc<d e>d c2 | d>Bg>B A2 A>B | A>Bc<d e>d c2 | d>Bg>d B>AG>b | a>g^f>d e>d c2 | d>Bg>B A2 A ||  