Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:Ador
['AGAB c2 Bc ABAG EFGB AGAB cdef', 'gc c2']  
X:1
L:1/8
M:4/4
K:Ador
|: AGAB c2 Bc | ABAG EFGB | AGAB cdef | gagf ec c2 :| gc c2 gcac | gc c2 Bcde | gc c2 gcac | 
 gagf ec c2 | gcec gcac | gc c2 Bcde | gage d2 cA | GAcd edcB ||  