Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/2=75
M:2/2
K:G
['z2 G>AB>c d>Bc>d G F>GA>B c>AB>G D', 'g>fg>d B2']  
X:1
L:1/8
Q:1/2=75
M:2/2
K:G
 z2 | G>AB>c d>Bc>d | !wedge!d2 !wedge!B2 !wedge!G3 G | F>GA>B c>AB>G | 
 !wedge!A2 !wedge!F2 !wedge!D3 D | G>AB>c d>Bc>e | !wedge!d2 !wedge!g2 !wedge!b3 b | 
 a2 a>g f>ga>f | g2 b2 g2 :: d2 | g>fg>d B2 B2 | d>^cd>B G3 G | F>GA>B c>AB>G | 
 !wedge!A2 !wedge!F2 !wedge!D3 D | g>fg>d B2 B>c | d>^cd>B G2 e>d | c>BA>G F>GA>F | G2 B2 G2 :|  