Chloe x Halle’s The Two of Us isn’t exactly a mixtape, but a collection of songs made by the duo that serve a sign of things to come.

This is NOT an album.

These words are “handwritten” on singer-songwriter duo Chloe x Halle’s website alongside the Youtube link to their newest project, the The Two of Us mixtape. The Bailey sisters, signed to Beyonce’s Parkwood Entertainment brand, had quite the year in 2016, releasing a refreshing debut EP in Sugar Symphony, touring, and even appearing at the 2016 BET Awards.

Then again, the words “Not really a mixtape either” are written on the right-hand side of the video, as well. So, let’s just take The Two of Us for what it is: a 25-and-a-half minute streaming project that features all-new, original music from the duo. The mixtape was released to the public on Friday.

Though The Two of Us has no official “tracklist” just yet, the project is full of melody and flows well enough to where the listener can detect the breaks between individual songs. There’s a Chloe x Halle remake of sorts of “Too Much Sauce” (which they premiered at The Fader Fort during SXSW and on which the singers all but gloat “you can’t schedule an appointment with the Queen, like me”). And there’s a smooth new ditty called “Puppet” that has single potential; it pops up at the four-minute mark.

But The Two of Us also suggests that Chloe x Halle are dipping into more mature territory and growing up on wax. One track on the mixtape, “Simple,” is a “response” of sorts to critics who’ve called their sound “too complex.” And at around the 10:49 mark, on a track that might be called “Hush Be Quiet,” the duo bite back at young men whose advances they’ve turned away and demand the respect they deserve.

Stream Chloe x Halle’s The Two of Us mixtape down below. Expect this to be the first but far from the last time you’ll hear from the sister pair on the rise in 2017.

UPDATE (4/4): Apparently, the Bailey sisters heard their fans’ cries. The Two of Us has now been liberated from its original one long stream form and separated into individual tracks, complete with an official playlist. Revisit the tape and pick your favorites more easily down below.