Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:2/2
K:D
['AB defe d2 A2 A2 de dAaf', 'fg a2']  
X:1
L:1/8
M:2/2
K:D
|: AB ||"D" defe d2 A2 |"G" BABd"A7" A2 de |"D" fgfe"Bm" dAaf |"Em" f2 e2"A7" e2 AB | 
"D" defe d2 A2 |"G" BABd"A7" A2 de |"D" f2 af"A7" eAef |"D" d6 :: fg ||"D" a2 a2 fade | 
"A7" feAe"D" f2 fg |"D" a2 a2"Bm" fdaf |"Em" f2 e2"A7" e2 fg |"D" a2 a2 fade |"A7" feAe e2 de | 
"D" f2 af"A7" eAef |"D" d6 :|  