Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
Q:1/2=90
M:2/2
K:G
['G2 (GA) BGGB ABcd eAAB cdec Bcdc', 'E2 dggf gddg eaag aeef gage dBGB']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:G
 G2 (GA) BGGB | ABcd eAAB | cdec Bcdc | AcBA GE E2 || dggf gddg | eaag aeef | gage dBGB | 
 AcBA BE E2 |]  