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:Emin
['E G G']  
X:1
L:1/4
M:4/4
K:Emin
 B/B/B/ |"Em" E E"G" G G |"Am" A A/B/-"B" B/B/B/B/ |"Em" E E"G" G G |"Am" z A"B" B2 | 
"Em" E E"G" G G |"Am" A A/B/-"B" B/B/B/B/ |"Em" E E"G" G G |"Am" z A"B" B2 |:"Em" z e"D" d2 | 
"Am" c/B/A/B/-"B" B/B/B/B/ |"Em" z e"D" d2 |"Am" c/B/A/"B"B/- B z :|  