Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
Q:1/2=60
M:4/4
K:C
['d2 z d']  
X:1
L:1/8
Q:1/2=60
M:4/4
K:C
 C |[K:G] Cae DbdG>A | B2 B2 A2 c>A | G2 F2 G2 z D | (GA)(Bc) d2 z d | ef(ge){e} d2 z d | 
 g3 f e3 d | (^cB)(AG){G} F2 z A | d2 d2 (Be)(fg) | d2 ^c2 d2 z d | g3 g (g f2) f | 
 (ge) e2{e} d2 z d | (d B2) e (c A2) d | B G2 ^c d4 | G>G A2 G4 | B>B c2 B3 B | (Ae)(dc) (cB)(dB) | 
 (Ae)(dc) (cB)(dB) | (cB)(AB) (cB)(cd) | (ed)(ef) g4 | B3 c{B} A4 | G2 z2 z2 |]  