The Piano Riff in standard tuning
E|3-----------------------------------1-----------3-----------------6--5--3--------3--1----------|
B|---------1--3--------3--4--------3-----------3-----------1--3--------------------------------3-|
G|---0--3--------0--3--------0--3--------0--3--------0--3--------3-----------0--3--------0--3----|
D|-----------------------------------------------------------------------------------------------|
A|-----------------------------------------------------------------------------------------------|
E|-----------------------------------------------------------------------------------------------|
I left out the pauses because figure it out for yourself