Amid the crisis on Wall Street that has squeezed the already-tight credit markets, independent music publisher Bug Music Inc. said Wednesday that it had secured a $200 million credit facility led by investment bank J.P. Morgan.

The private Los Angeles company said that the credit line was priced at the London interbank offered rate (Libor) plus 2.5 percent, considered a good rate. The company can raise the facility to $250 million if needed.

“Our sound business fundamentals and practices continue to be rewarded as reflected by the facility size and attractive rate, in spite of a very difficult credit market,” said Chief Executive John Rudolph in a statement.

Bug’s catalog includes songs by Johnny Cash, Pete Townshend, Willie Dixon, Muddy Waters, Woody Guthrie, Townes Van Zandt and Stevie Ray Vaughan. Its recent deals include acquisition of Iggy Pop’s catalog and the signing of songwriter-producer Kara DioGuardi, American Idol’s newest judge. It also has acquired DioGuardi’s catalog of hit songs, sung by such artists as Celine Dion, Christina Aguilera and the Jonas Brothers.

Bug Music is controlled by its senior management and Crossroads Media, a Los Angeles strategic partnership between former Paramount Enterprises President Thomas McGrath and Spectrum Equity Investors, a private equity firm with offices in Boston and Menlo Park.