Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:4/4
K:Cmin
['(CD) F4 z E2 D (ED) (CB,)', 'z (G2 F)', 'z4 z G2 F G4 z (F2']  
X:1
L:1/8
M:4/4
K:Cmin
"^Refrain" |:"Cm" (CD) (EC)"Fm" F4 |"Cm" z E2 D (ED) (CB,) |"Cm" (CD) (EC)"Fm" F4 | 
"Bb" z EDB,"Cm" C4!fine! :|"A" |:"Cm" z (G2 F) (GA) (BA) | z (G2 F) GF E2 | z (GF) G2 (AG) | 
"Fm" F4 z4 :|"B" |:"Cm" z G2 F (GF) E2 |"Bb" z D2 C DE (FG) |"Eb" z (G=A)B"F" (cB) AF |"G" G4 z4 :| 
"C" |:"Cm" z G2 F G4 |"Fm" z (F2 G) F4 |"Cm" z (G2 F)"Eb" G2 B=A |"G" G4 z4 :|  