Several members, including longtime member Malik B., left the group. In December 2001, the Roots backed Jay-Z for his "" concert. With heightened popularity came mounting pressure. The Roots released "Phrenology" (named after the pseudoscience of the same name) in 2002. Despite not charting as high as "Things Fall Apart", reaching a peak of No. 28 on the charts, "Phrenology" was commercially successful, being certified gold, and earning a Grammy nomination for Best Rap Album. At the time, however, there came rumors that the Roots were losing interest in their signing with MCA.