Senators Klobuchar and Mike Lee, the top Republican on the committee, did not provide a date for the hearing or a list of witnesses.“The high fees, site disruptions and cancellations that customers experienced shows how Ticketmaster’s dominant market position means the company does not face any pressure to continually innovate and improve,” Klobuchar said.“We will hold a hearing on how consolidation in the live entertainment and ticketing industry harms customers and artists alike.”Ticketmaster in a statement denied any anti-competitive practices and said it remained under a consent decree with the Justice Department following a 2010 merger, adding that there was no “evidence of systemic violations of the consent decree.”“Ticketmaster has a significant share of the primary ticketing services market because of the large gap that exists between the quality of the Ticketmaster system and the next best primary ticketing system,” the company said.For her part, Swift on Friday said it was “excruciating” for her to watch fans struggle to secure tickets and that she had been assured that Ticketmaster could handle large demand.Klobuchar was one of three lawmakers who argued in a letter on Monday that Ticketmaster and owner Live Nation Entertainment, the events ticketing giant behind the recently botched sale of Swift concert tickets, should be broken up by the Department of Justice if any misconduct is found in an ongoing investigation."