The streaming wars heated up last night when Apple threatened to sue TIDAL over the streaming rights to a surprise Drake performance at Lil Wayne‘s Lil Weezyana Festival last night (Aug. 28).

There’s a lot of moving parts here: basically, Lil Wayne (one of TIDAL’s artist owners), sponsored a New Orleans festival featuring a Hot Boys reunion and appearances from Master P, Curren$y, and Big Freedia—all, reportedly, to benefit local charities. The concert was (unsurprisingly) being exclusively streamed on TIDAL—which wasn’t an issue until Wayne’s Young Money signee Drake made a surprise appearance.

Drake has an exclusive contract with Apple Music reportedly worth $19 million, and so when his guest performance began (he played “HYFR”, “My Way”, and “Back to Back”), the TIDAL stream went dark, and was replaced with the below message:

Why? According to Page Six, Apple threatened a $20 million suit if TIDAL streamed Drake’s set.

UPDATE: In speaking with Buzzfeed today, Drake’s manager Future The Prince said the decision for Drake to not participate in the stream had nothing to do with Apple. In fact, it was Drake’s team themselves that decided to abstain. Says Prince:

“The decision to not have Drake participate in the Tidal steam has nothing to do with Apple or Drake’s deal. Point blank, 100%. I made a business decision. Apple doesn’t have the power to stop us from being part of a live stream. The only people that have the power to do that are Cash Money and Universal, and they’re our partners.”