Mono and stereo recording represent two fundamentally different approaches to capturing and reproducing sound. Mono, short for monaural or monophonic sound, uses a single audio channel to record and play back audio. In a mono recording, all sound sources are combined into one channel, and the same signal is sent to all speakers. This means that regardless of the listener's position, the sound appears to come from a single point. Mono recordings are simpler and often used in situations where spatial information is not critical, such as spoken word recordings, phone communications, or archival purposes. Mono can also help in ensuring that audio is clear and balanced across all playback devices without worrying about phase issues or stereo imaging. However, it lacks the sense of space, directionality, and depth that stereo recordings provide. Stereo, or stereophonic sound, uses two independent audio channels, typically referred to as the left (L) and right (R) channels, to create a sense of width and spatial placement of sound. Stereo recording aims to replicate the way humans naturally perceive sound with two ears, providing a more immersive and realistic listening experience. By recording and mixing audio in stereo, engineers can place instruments and sound sources within a three-dimensional sound field, allowing listeners to perceive direction, distance, and ambiance. Stereo also enhances the overall musical experience, making it essential for music production, film soundtracks, and live performance recordings. When designing a stereo recording setup for a live music concert, several factors must be considered, including the venue's acoustics, the size and arrangement of the performing ensemble, audience placement, and the desired balance between direct sound and ambient sound. The choice of stereo technique is critical; common stereo recording methods include XY, AB, ORTF, and mid-side (MS) configurations, each offering unique characteristics in terms of stereo width, depth, and phase coherence. For a live music concert, a practical approach often combines a main stereo pair for capturing the overall ensemble with additional spot microphones for individual instruments or sections. One effective method is to use an ORTF setup for the main stereo pair. The ORTF configuration uses two cardioid microphones positioned at a 110-degree angle with 17 cm spacing between capsules, which approximates the human ear's perception of sound. This setup captures a realistic stereo image with a good balance of direct and ambient sound. The main ORTF pair should be placed at a distance where the entire ensemble can be captured without excessive proximity to any single instrument. Typically, this position is