(Reuters) — A federal appeals court on Monday revived a lawsuit accusing CBS Corp. of copyright infringement for playing digitally remastered songs recorded before 1972 by Al Green, the Everly Brothers, Jackie Wilson and others on its radio stations and online.

The 9th U.S. Circuit Court of Appeals in Pasadena, California, said a lower court judge acted too quickly in saying federal copyright law preempted California state law claims by the plaintiffs, which owned the original analog recordings.

"A digitally remastered sound recording made as a copy of the original analog sound recording will rarely exhibit the necessary originality to qualify for independent copyright protection," Circuit Judge Richard Linn wrote for a 3-0 panel.

The decision is a victory for owners of older songs, who drew support from the Recording Industry Association of America trade group, and have for many years battled broadcasters in court over royalties.

Some owners have found success in arguing that state laws forbade playing their songs without permission. Recordings before Feb. 15, 1972, are not covered by federal copyright law.

CBS and its outside lawyer did not immediately respond to requests for comment.

The plaintiffs ABS Entertainment Inc., Barnaby Records Inc., Brunswick Record Corp. and Malaco Inc. sued CBS over its playing of songs they had remastered from their original analog format.

Such remasterings can change songs' original timbre, sound balance and loudness, but otherwise leave them unedited.

In May 2016, U.S. District Judge Percy Anderson in Los Angeles said CBS, which according to court papers does not use analog recordings, shouldn't pay because the remastered recordings were authorized "derivative works" governed only by federal copyright law.

But Judge Linn, who normally sits on the Federal Circuit appeals court in Washington, D.C, said aural changes resulting from digitally remastering analog recordings generally do not "exhibit the minimum level of originality to be copyrightable."

Judge Linn also accepted the plaintiffs' argument that their state law copyrights were "distinct" from whatever rights were inherent in the remasterings.

Accepting CBS' counterarguments would leave such owners "uncompensated and without control of distribution of their creative product," Judge Linn wrote.

The appeals court returned the case to Judge Anderson for further proceedings, including to review the merits of the plaintiffs' class action claims.

A lawyer for the plaintiffs did not immediately respond to requests for comment.

The case is ABS Entertainment Inc. et al. v. CBS Corp. et al., 9th U.S. Circuit Court of Appeals.