Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/16
M:4/4
K:A
['E2 A4 a2>f2 edcB A2Bc d2f2e2a2 c2>B2B2>c2', 'e2fg a2e2c2A2', 'C2A,2A,2 E2 AGAc eAaf edcB A2Bc d2f2', 'agfe ^defg aAfA eAcA']  
X:1
L:1/16
M:4/4
K:A
|: E2 | A4 a2>f2 edcB A2Bc | d2f2e2a2 c2>B2B2>c2 | d2ef e2fg a2e2c2A2 | dBed cABG E2A2 A2 :| e2 | 
 a4 e2fg a2e2c2A2 | d2f2 e2a2 c2B2B2e2 | a4 e2fg a2e2c2A2 | dBed cABG E2A2 A2e2 | 
 a2gf e2fg a2e2c2A2 | d2f2 e2a2 c2B2 B4 | A2Bc B2AG F2GA E2DC | DB,ED CA,B,E C2A,2A,2 |: E2 | 
 AGAc eAaf edcB A2Bc | d2f2 e2a2 c2B2B2>c2 | dcdf ^defg agae cecA | dBed cABG E2A2A2 :| e2 | 
 agfe ^defg aAfA eAcA | d2f2 e2a2 c2B2B2e2 | agfe ^defg aAfA eAcA | dBed cABG E2A2 A2e2 | 
 aAfA eAfA eAaA eAcA | dcdf eAaA c2B2B2c2 | ABcd cBAG FGAB AGFE | DB, ED CA, B,G A2A,2A,2 ||  