Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:2/4
K:Amix
['ef/e/ dB BA', 'f2 fA Bd ef'  
X:1
L:1/8
M:2/4
K:Amix
 ef/e/ dB | BA B/c/d | ef/e/ dB | BA A2 | ef/e/ dB | BA B/c/d | ab/a/ gf | ed d :| e | f2 fA | 
 Bd ef | g2 ga | ba f/g/a | f2 fA | Bd ef | ab/a/ gf | ed d :|  