Here's the song you hear when you enter a shop.

e-----------------------------------------------------------|
B------------------------------3----------------------------|
G--0----0-----2-0--------0-5-4---5-2-0--1-2-----------------|
D----4--------------2--3---------------------2-3---4-5--0-2-|
A-----------------------------------------------------------|
E-----------------------------------------------------------|

e---------------------------------------------------------|
B---------------------------------------3-1-------5-3-----|
G--0-2------------4-2-------2-5-4-2-4-5-----2-0-5---------|
D-------2-3-0-2-4-----5-4-5-------------------------------|
A---------------------------------------------------------|
E---------------------------------------------------------|

e---------------------------|     Repeat as many times as needed
B--0---0--------------------|
G----0---2---2-0---0--------|
D----------3-----0---3-2-0--|
A---------------------------|
E---------------------------|