Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:A
['Fc c>c d/c/B/A/']  
X:1
L:1/8
M:4/4
K:A
"F#m" Fc cB/c/"Bm" dB"F#m" c>c |"G" d/c/B/A/ =GG/A/"Em7" Bd"F#" cF | 
"F#m" Fc cB/c/"Bm" dB"F#m" c>c |"G" d/c/B/A/ =G/A/B"Em7" B^A"F#" F2 ::"F#m" FA/G/ AF A/G/A F>c | 
"G" d/c/B/A/ =GG/A/"Em7" B/c/d/B/"F#" dc |"F#m" FA/G/ FA A/G/A F>c | 
"G" d/c/B/A/ =G/A/B"Em7" B^A"F#" F2 :|  