Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:4/4
K:A
['E2 A2 G2 Ac B8 B2 c2']  
X:1
L:1/8
M:4/4
K:A
"A" E2 A2 G2 Ac |"Bm" B8 |"E7" B2 c2 de c2 |"A" c8 |"A" E2 A2 G2 Ac |"Bm" B8 |"E7" B2 c2 de c2 | 
"C#7" c8 |"D" d2 f2 a3 a | gagf f4 |"Bm" B2 d2 f3 f |"E7" efed"C#7" [cc]BAG |"F#m" A4 F4 | 
"Bm" B4"E7" Bc A2 |"A" A4-"D" A4- |"A" A8 |]  