Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:G
['GAG BAB', 'fef g2 edc']  
X:1
L:1/8
M:6/8
K:G
 |"C" [cGC]3"G" [BGD]3 |"Am" [AE]BG"D" FED |"G" GAG BAB | GAG BAB |"C" [cGC]3"G" [BGD]3 | 
"Am" [AE]BA"D" fef |"G" g2 d"C" edc |"D7" BAB"G" GAB || |"C" c2 (3d/e/f/"G" gdB |"Am" ABG"D7" FED | 
"G" GAG BAB | GAG BAB |"G" G2 f gdB |"Am" ABA"D7" fef |"G" g2 d"C" edc |"D7" BAB"G" G3 || | 
"Am" cAc"Em" BGB |"A7" ABG"D" FED |"G" GAG BAB | GAG BAB |"Am" cAc"G" BGB |"Am" ABA"D" fef | 
"G" g2 d"C" edc |"D7" BAB"G" G3 |]  