Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:2/4
K:G
['G2 FFFF']  
X:1
L:1/8
M:2/4
K:G
 =FFFF | =F2 G2 | FFFF | G=F(3FFFFFFF | G2 z2 | =FFFF | =F2 G2 | FFFF | =FF G2 | FFFF | =FF G2 | 
 z4 | =FFFF | =FFGF | FFFF | =FFG z |]  