The RIAA alternatively suggested using a warning label reading "Parental Guidance: Explicit Lyrics", and after continued conflict between the organizations, the matter was discussed on September 19 during a hearing with the United States Senate Committee on Commerce, Science, and Transportation. Notable musicians, Frank Zappa, Dee Snider, and John Denver each testified at this hearing with strong opposition to PMRC's warning label system, and censorship in general.[1] Approximately two months after the hearing, the organizations agreed on a settlement in which audio recordings were to either be affixed with a warning label reading "Explicit Lyrics: Parental Advisory" or have its lyrics attached on the backside of its packaging.[2]