Task: Question Answering
Input (English): Passage: The band members grew uncomfortable with their success, with much of the burden of Pearl Jam's popularity falling on frontman Vedder. While Pearl Jam received four awards at the 1993 MTV Video Music Awards for its video for "Jeremy", including Video of the Year and Best Group Video, the band refused to make a video for "Black" in spite of pressure from the label. This action began a trend of the band refusing to make videos for its songs. Vedder felt that the concept of music videos robbed listeners from creating their own interpretations of the song, stating that "Before music videos first came out, you'd listen to a song with headphones on, sitting in a beanbag chair with your eyes closed, and you'd come up with your own visions, these things that came from within. Then all of a sudden, sometimes even the very first time you heard a song, it was with these visual images attached, and it robbed you of any form of self-expression."
The United States Department of Justice was investigating the company's practices at the time and asked the band to create a memorandum of its experiences with the company. Band members Gossard and Ament testified at a subcommittee investigation on June 30, 1994 in Washington, D.C. Pearl Jam alleged that Ticketmaster used anti-competitive and monopolistic practices to gouge fans. After Pearl Jam's testimony before Congress, Congressman Dingell (D-Mich.) wrote a bill requiring full disclosure to prevent Ticketmaster from burying escalating service fees. Pearl Jam's manager said he was gratified that Congress recognized the problem as a national issue. 
Question: What band's members testified before Congress?
Output (English): Pearl Jam.