4.0 was an American R&B/swing/soul group formed in 1995, consisting of four members whose individual names are not specified. The group's breakthrough came with the release of their debut single "Have a Little Mercy" in the summer of 1997, produced by Jimmy Jam and Terry Lewis. The ballad became a modest hit in the United States, charting on the Billboard Hot 100 for 20 weeks and peaking at Number 28 on the R&B charts. This success marked a significant moment for the group, as it was their first and only entry into mainstream music charts. Following this success, their self-titled debut album 4.0 was released in September 1997 under A&M Records. However, the album only reached Number 100 on the R&B Album Charts, indicating a limited impact compared to their single's performance. Despite the modest chart success of their debut album, 4.0 did not release any further music or have notable activities documented. The band disbanded in 1997, marking the end of their brief musical journey.
