A little song we play in band. Probably has another name, 
but I'm not aware of it. We call is B Flat Blues. Easy.

E----------------------------
B----------------------------
G----------------------------
D-------0-1-0----------------  Play 2X
A---0-3-------3-0------------
E-1--------------------------      

E---------------------------
B---------------------------
G-------0-1-0---------------
D---0-3------3-0------------
A-1-------------------------
E---------------------------     

E----------------------------
B----------------------------
G----------------------------
D-------0-1-0----------------  This is the same as the beginning
A---0-3-------3-0------------
E-1--------------------------  

E----------------------------
B----------------------------
G-----0----------------------
D---2----2---0--3--0--------
A-3--------1-----------------
E----------------------------

E----------------------------
B----------------------------
G----------------------------
D-------0-1-0----------------  also the same 
A---0-3-------3-0------------
E-1--------------------------  

Make it fast. Also probably sounds good on a bass.