This piece was written for The Marriage Of Figaro
It was also featured in the soundtrack of Amadeus, which is one of my favourite films.
This is the intro;

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

e|----0-3------8----8-12--8-----8------3-1----1----|
B|--1------5-8----8-----------8---8--5------3---1--|
G|:-----------------------------------------------:|
D|:-----------------------------------------------:|
A|-------------------------------------------------|
E|-------------------------------------------------|