Nickelback - Should've Listened bass tab
Beginning
G-------------------------------------------------|
D--------0----------------------------------------|
A--2----------------0-----------------------------|
E-------------3------------0----------------------|
rest of song
G---------------------------------------------------------------------------|
D---------------------0--0-0---0--0-0---------------------------------------|
A--2--2-2---2--2-2----------------------------------0--0--00----------------|
E----------------------------------------3--3-3------------------0--0-0-0-0-|
And thats how easy it is!! :)