Easy to do.

High
------------------------------------------------------
    |E|--15-15-15-19--|--14-14-15-12---|
    |B|---------------|----------------|
    |G|---------------|----------------|    Keep repeating Through the song.
    |F|---------------|----------------|
    |A|---------------|----------------|
    |E|---------------|----------------|
-------------------------------------------------------
Medium
___________________________________________________________
-----------------------------------------------------------
    |E|--9-9-9-13-|-8-8-9-6--|
    |B|-----------|----------|
    |G|-----------|----------|    Keep repeating Through the song.
    |F|-----------|----------|
    |A|-----------|----------|
    |E|-----------|----------|
----------------------------------------------------------
==========================================================

Or a lower pitch 
------------------------------------------------------
    |E|--3-3-3-7-|-2-2-2-0---|
    |B|----------|-----------|
    |G|----------|-----------|    Keep repeating Through the song.
    |F|----------|-----------|
    |A|----------|-----------|
    |E|----------|-----------|
-------------------------------------------------------