lead bit at the start 
 
played an existing one and it didnt sound quite right, this how it sounds in my ear so hope it works out:) 
 
e|------------------------------------------------------------------------------------------| 
b|-----3--5-------3--5--------3--5-------3--5--------3--5-------3--5--------3--5-------3--5-| 
g|------------------------------------------------------------------------------------------| 
d|-2---------222--------2220--------000--------000------------------------------------------| 
a|------------------------------------------------2--------222--------2223--------333-------| 
e|------------------------------------------------------------------------------------------| 
 
by 
 
the squire.