Design musical compositions that conform to the indicated framework and encompass the proposed musical concept.
X:1
L:1/8
Q:1/4=100
M:4/4
K:Bb
['d2 d2', 'B3/2 A/'  
X:1
L:1/8
Q:1/4=100
M:4/4
K:Bb
 (Bc) | d2 d2 d2 c3/2 d/ |"^(a)" (e>d) c3/2 B/ (B<A) G2- |[M:2/4] G3 d | 
[M:4/4] e3 (d/e/)"^(b)" f2 B F | A2 B2 !fermata!c3 F | B3/2 A/ B3/2 c/ (B>A) G F | 
 (B>A) B2 c !fermata!f2 d |"^(c)" e2- (3e(fg) f3 e | d2 c2"^(d)" (B>A) (G>F) | 
 B3/2 A/ B3/2 c/ (B>A) G F | (B>A) B2 c !fermata!f2 d | e2- (3e(fg) f3 e | d2 c2 B2 || (Bc) | 
 d2 d2 d2 c3/2 d/ |"^(a) var." (ed) c B (B<A) G2- |[M:2/4] G3 d | 
[M:4/4] e3 (d/e/)"^(b) var." f3 B | B3/2 A/ B2 !fermata!c3 F | B3/2 A/ B3/2 c/ (B>A) G F | 
 (B>A) B2 c !fermata!f2 d |"^(c) var." e2 (fg) f3 e | d2 c2"^(d) var." (BA) (GF) | 
 B3/2 A/ B3/2 c/ (B>A) G F | (B>A) B2 c !fermata!f2 d | e2- (3e(fg) f3 e | d2 c2 B2 |]  