When Two Bands Merged Into One
The rock band Melvins famously absorbed an entire different band into their own lineup. Instead of replacing a single member, they combined forces with the duo Big Business to create a powerhouse quartet.
This unusual collaboration occurred after their bassist left, leaving the original members looking for a fresh sound. Rather than auditioning individuals, they invited both the bassist and drummer from Big Business to join full-time. This unique merger resulted in a heavier, more intense sonic identity that defined their 2006 album. It serves as a rare example of a veteran band successfully reinventing itself by adopting another established group.
Source: (A) Senile Animal