Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:Gmix
['c<d{c} BA', 'e2 dc']  
X:1
L:1/8
M:4/4
K:Gmix
 AB | c<d{c} BA c<d{c} BA |{c} B2 AG c<d{c} BA | c<d{c} BA e2 AB | c<d{c} BA c<d{c} BA | 
{c} B2 AG A2 GE | DE FG{c} BA Bc | dc BA e2 || AB | A2{g} a2{f} e2 dc |{c} B2 AG A2{g} a2 | 
{f} e2 dc e2 AB | A2{g} a2{f} e2 dc |{c} BA BG A2 GE | DE GA{c} BA Bc | dc BA e2 |]  