Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:2/2
K:C
['gc (3gfe', 'GcEc d(D D2)']  
X:1
L:1/8
M:2/2
K:C
 gc (3gfe gcce | gc (3gfe adde | gc (3gfe gc (3gfe | fagf e(c c2) :| GcEc G2 (ec) | GcEc d(D D2) | 
 GcEc G2 (ef) | gagf e(c c2) | GcEc GcEc | GcEc d(D D2) | (3agf ge (fd)ef | gagf ec c2 ||  