Two or more DJs alternating tracks within the same set, mixing into each other in real time.
Definition
A B2B (back-to-back) is a DJ format in which two or more DJs share a set, alternating tracks and mixing each other's selections in real time. Famous trance B2Bs include Armin van Buuren and Andrew Rayel at A State of Trance, Above & Beyond's frequent trio sets, and Markus Schulz's collaborations with various ASOT-aligned guests. A successful B2B requires more than just shared taste: it requires an ability to read your partner's selections, react with complementary tracks, and build energy collaboratively rather than competitively. Three- or four-DJ B2Bs (sometimes called "B2B2B" or "B2B2B2B") are festival favourites — they are unpredictable, conversational, and often produce moments no DJ would have created alone. Some B2B partnerships have become recurring events in their own right.