Bruno Mars and producer Mark Ronson are presumably lawyering up after the pair were hit with a lawsuit by the sole surviving member of a band called Collage, who claims their megahit “Uptown Funk” is a carbon-copy ripoff of the band’s 1983 track “Young Girls”.

As TMZ reports, “Uptown Funk” does indeed sound remarkably similar to the earlier song “in rhythm, harmony, melody and structure,” also pointing out that Collage was a part of the thriving Minneapolis funk scene of the 1980s that spawned Prince and other artists — and Ronson and Mars are admitted fans of the music that sprang from that era.

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The lawsuit bears some definite similarities to the one launched by the family of Marvin Gaye, who successfully sued Robin Thicke and Pharrell over their claims that “Blurred Lines” stole considerable elements of an old Marvin Gaye track.

The remaining member of Collage is reportedly demanding a cut of the profits from the song, which are enormous; as TMZ notes, the song has sold more than 6 million copies, and is the second-longest-running #1 hit in Billboard history. In fact, “Uptown Funk” is played so often on Spotify that it earns $100,000 per week from that streaming service alone.

So how does “Uptown Funk” compare to “Young Girls”? Listen for yourself: