Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
Q:1/4=170
M:3/4
K:D
['D2 D2 (DF) AB G2 (GB) Bd', 'a2 (af) df e2 g2 (ge) ce'  
X:1
L:1/8
Q:1/4=170
M:3/4
K:D
 D2 |:"D" D2 (DF) AB |"G" G2 (GB) Bd |"A" A2 (Ac) ec |"D" d2 fd A2 |"D" D2 (DF) AB | 
"G" G2 (GB) Bd |"A" A2 (Ac) ec |"D" d2 d4 ::"D" a2 (af) df |"A"{/f} e2 !plus![eA]2 !plus![eA]2 | 
"A7" g2 (ge) ce |"D" de (fg) a2 |"D" a2 (af) df |"A"{/f} e2 !plus![eA]2 !plus![eA]2 | 
"A7" g2 (ge) ce |"D" d4 z2 :|  