Definition & Meaning of "B-side"

What is a "B-side"?

A B-side is the secondary track on a vinyl record or single, located on the side opposite the A-side. It is usually a less prominent song compared to the A-side and may include additional or lesser-known material. While the A-side is often the main attraction and promoted heavily, the B-side can offer extra content or provide a different perspective from the main feature.