Develop musical pieces that align with the predetermined guidelines.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
M:2/4
K:D
|: e2 |"D" f2 ff d2 dd |"D" A2 AA F2 FF |"A" E2 EF GF E2 |"D" DEFG A2 A2 |"D" f2 ff d2 dd | 
"D" A2 AA F2 FF |"A" E2 EF GF E2 |"D" D2 F2 D2 ::[K:A] cd |"A" e2 ec e2 ec |"A" efed c2 cc | 
"E" B2 Bc dc B2 |"A" ABcd e2 cd |"A" e2 ec e2 ec |"A" efed c2 c2 |"E" B2 Bc d2 cB |"A" A2 c2 A2 :|  