Present-day Bach performers usually present the pieces from one of two different standpoints
The first is called so-called "authentic performance practice", utilizing historical techniques and authentic instruments
Alternatively, the use of modern instruments and playing techniques are used, with a tendency towards larger ensembles.
In Bach's time orchestras and choirs were usually smaller than ones today.
Easy listening realizations of Bach's music and its use in advertising also contributed greatly to Bach's popularization in the second half of the twentieth century. Among these were the Swingle Singers' versions of Bach pieces.