Generate tunes according to the specified musical format and the provided motif.
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
['A2 F2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
 F2 | G2 F2 B2 c2 | d3 c B2 F2 | A2 F2 c2 d2 | e3 d c2 c2 | (dc) (de) d2 c2 | (BA) (Bc) A2 F2 | 
 D2 (AG) F2 =E2 | F4 F2"^Chorus" (FG) | A2 (AB) c2 (cd) | _e3 d c2 (dc) | B3 A B2 (cB) | 
 A3 G A2 F2 | (BA) (Bc) d2 B2 | (c=B) (cd) e2 c2 | A3 B c2 d2 | B4 B2 |]  