Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:A
['f eAcA eAAf eAcA BFFf eAcA eAcA', 'F B TcATcA TcAAB TcATcA BFFB TcATcA'  
X:1
L:1/8
M:4/4
K:A
 f | eAcA eAAf | eAcA BFFf | eAcA eAcA | B/B/B cA BF F :: B | TcATcA TcAAB | TcATcA BFFB | 
 TcATcA EATcA | B/B/B cA BFF :|  