Mult-track recording sessions with a variety of musical artists. Microphones used include the company's classic ELA M 251, C12, and U47 microphones, alongside the newly designed CU-29, AR-51, AK-47 MkII, ELA M 260, and M80 dynamic microphones. Each Multi-Track Session File includes a detailed description of the recording session, including photos of the microphone placement, as well as the choice of pre amps used for each channel. Link.