(Reuters) - A group that represents audio streaming firms including Spotify and France's Deezer in Europe has urged the European Commission to reject Apple's proposal in a music streaming case.

Digital Music Europe expressed concern in a letter submitted to the European Commission on Tuesday that Apple's proposal to comply with the regulator's March order, in which the iPhone-maker was fined 1.84 billion euros ($1.98 billion), does not provide concrete and effective remedies.