Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
Q:1/8=140
M:2/4
K:D
['dA/d/ fe dB Bc/B/ Ad fe', "fa d'2 c'b a2 gg/f/ gb", 'FA d2 cB A2 GG/F/ GB'  
X:1
L:1/8
Q:1/8=140
M:2/4
K:D
 A | dA/d/ fe | dB Bc/B/ | Ad fe | df af | dA/d/ fe | dB Bc/B/ | Ad fe | df a :| e | fa d'2 | 
 c'b a2 | gg/f/ gb | ba a2 | fa d'2 | c'b a2 | gg/f/ gb | ag ge ||"^alternate second part" E | 
 FA d2 | cB A2 | GG/F/ GB | BA A2 | FA d2 | cB A2 | GG/F/ GB | AG GE ||  