Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/2
K:G
['', '(gf)S edBA G2 (BG) Bdef gbag egdB', 'BAAg edBA G2 (BG) Bdef gbag (3(efg)', 'eaag bgag', 'GABd eaag bgag eaaf g2 (ga) bgag']  
X:1
L:1/8
M:2/2
K:G
 (gf)S || edBA G2 (BG) | Bdef gbag | egdB GFGA | Beed BAAg || edBA G2 (BG) | Bdef gbag | 
 (3(efg) (dB) GFGA | Beed BA !fermata!A2 |] | eaag bgag | eaaf gdBd | eaag bgag | egdB GABd || 
 eaag bgag | eaaf g2 (ga) | bgag edef | gbaf g2 (fg)S |]  