Released in 1973, MFSB is the self-titled album by the studio group MFSB, who formed the core of Philadelphia Soul. Under the guidance of Gamble & Huff, the album showcases a refined rhythm section, thick horns, and flowing strings working in unison, documenting a rich ensemble prior to their global hit "TSOP (The Sound of Philadelphia)." The highly integrated performance of funk, soul, and jazz elements creates strong momentum even without a lead singer, demonstrating the sophistication of instrumental soul. This is an important album for understanding how the foundation of Philly Soul was formed.