Create a musical piece with the provided alphabetic notation system and theme.
X:1
L:1/8
M:2/4
K:G
['BG BB/B/ cc ce/e/ fd b>a', 'ba ag/f/ ag fe/e/ fe']  
X:1
L:1/8
M:2/4
K:G
 B/B/"^A" |:"G" BG BB/B/ |"Am" cc ce/e/ |"D7" fd b>a |"G" ag/e/ dB/B/ | BG BB/B/ |"Am" cc ce/e/ | 
"D7" fd b>a |1"G" gg gB/B/ :|2"G" gg g z"^B" |:"D7" f/f/f ba |"G" ag/f/ ag |"D7" fe/e/ fe | 
"G" ed/^c/ ed |"D7" ff/f/ ba |"G" ag/f/ ag |"F#7" fe/e/ fe |"Bm" dd d"_>Teil A""^(D7)" z :: 
[K:C]"^C""C" e>e ce | e>c ce |"G7" ed/^c/ df |"C" ag/^f/ ge | e>e ce | e>c ce |"G7" e/d/^c/d/ fB | 
"C" cc c"_Fine" z :|  