Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:1/4=120
M:2/2
K:D
['afdf edee', 'd2 fd']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:D
"^Steady" f | afdf edee | B/c/B ed B2 Af | afdf edee | e/f/g fe{Bc} d3 :: A | d2 fd ed BB | 
 d<B ed{Bc} B2 AA | d2 fd edee | e/f/g fe{Bdc} d3 :|  