MANILA, Philippines?Broadcast network GMA 7 said it has ?called the attention? of the composer of a Kapuso ad jingle, which singer-songwriter Gary Granada claims to have used the basic structure of his own work.

?We are still waiting for the response,? GMA 7 senior vice president for legal affairs Dick B. Perez told Inquirer on Friday.

In a 14-minute audio file sent via e-mail to friends, colleagues and the media, Granada said GMA Kapuso Foundation commissioned his services for the jingle?s music. He said the study tape he submitted was disapproved, but that the final product, aired in December, resembled his work.

In a statement sent to the Inquirer on Saturday, Perez said the foundation ?had nothing to do with the composition of the music.? Perez also said the lyrics given to Granada to work on came from GMA 7?s Marketing department.

Granada said he had to change one word to suit the music. Under copyright laws, Perez countered, this ?does not make [it]... his version.? Perez added that Granada can?t claim joint authorship, either. ?[Joint authorship means] 1) there was an intent between two parties to be joint authors at the time the work was created, and 2) the contributions to the work of the party claiming to be a joint author must be independently copyrightable.?

Granada?s case lacked these requisites, Perez insisted. He said Granada was engaged to write the music to lyrics ?completed by GMA Marketing. Neither GMA Marketing nor Granada intended to be joint authors of [said] lyrics.?