Yesterday Today and the Osborne Brothers, released on Decca in 1968, captures Bobby and Sonny Osborne at the peak of their commercial success and at the most controversial point of their artistic evolution. The brothers had embraced electric instruments, drums, and lush Nashville production values in a deliberate bid for country crossover, and the resulting sound divided the bluegrass community sharply. Whatever one's position on the experiment, the vocal prowess on display is undeniable — Bobby's high lead and the brother harmonies remain extraordinary — and the album documents an important moment when bluegrass's boundaries were being tested from within by ambitious, commercially minded artists.