Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/4
M:4/4
K:F
['[Cc] A', 'd d e/f/a/b/', 'd2 A/B/ =c B/c/ d A f/e/']  
X:1
L:1/4
M:4/4
K:F
 [F,F]2 F2 | G A c d | [Cc] A G F | D2 C2 | [F,F]2 F2 | G A [Cc] d | [Cc] A F F | [F,F]4 | 
 [F,F]2 F2 | G A c d | [Cc] A G F | D2 C2 | [F,F]2 F2 | G A [Cc] d | [Cc] A F F | [F,F]2 C D | 
 _E2 D E | [FF]2 [C,C]2 | A G F/ D3/2 | C4 | [C,C]2 D F | d2 [Cc] A | [CG]3 F/G/ | [F,CF]4 || 
[K:D]"^Another version in 'D'" d d e/f/a/b/ | a/f/e/d/ B A | d d e/f/a/b/ | a/f/e/d/ d2 :| 
 A/B/ =c B/c/ d | A f/e/ d/4B/4 A3/2 | A B/d/ b a/f/ | e3/2 d/4e/4 d2 ||  