This is a vocal tab for Mad World, to me it sounds 95% perfect, maybe even 100% it 
depends on what your ears are like :D

Tuning (Standard EADGBE)

Verses

e|-----------------------------------------------------------|
B|-----------------------------------------------------------|
G|-----------------------------------------------------------|
D|---7-7-10-10-7-7-14-14--14-10--12-12-12-9--12-12-12-10-9-7-|
A|-----------------------------------------------------------|
E|-----------------------------------------------------------|

Chorus

e|----------------------------------------------------------|
B|----------------------------------------------------------|
G|----------------------------------------------------------|
D|---7-7-10-10-14-14-16-12--12-16-16-12-12-7----------------|
A|----------------------------------------------------------|
E|----------------------------------------------------------|

When he sings Mad World, Mad World

e|----------------------------------------------------------|
B|----------------------------------------------------------|
G|----------------------------------------------------------|
D|----------------------------------------------------------|
A|----------------------------------------------------------|
E|---9\6--9\6-6-5-3-----------------------------------------|

I hope this tab helps, you use this to sing along to if you cant be bothered to 
learn chords, haha....