Miley Cyrus & Shawn Mendes Musical Minds Unite!!! ... New Single on The Way

2/6/2019 10:05 AM PST

Miley Cyrus and Shawn Mendes Teaming Up for New Single

EXCLUSIVE

Miley Cyrus and Shawn Mendes are hard at work putting the finishing touches on a new single together ... TMZ has learned. 

Sources familiar with the project tell us the song will drop in the coming weeks ... and is likely to end up as a track on Miley's new album. It's the first time the duo has paired up for any type of collab.

Shawn and Miley fans started to connect the dots that something was up Tuesday night when Miley posted a photo from rehearsals for the Grammys. Cyrus posed in front of some guitars and amps ... and some noticed Shawn's guitar in the background. What's more ... his name appears to be marked on another piece of equipment. 

View this post on Instagram

Gram Gram rehearsals! Performing this Sunday at the @recordingacademy !

A post shared by Miley Cyrus (@mileycyrus) on

Mendes is coming off a massive 2018 ... and Miley is expected to make a big splash this year with new music of her own. Nothing like a possible Grammys collab to kick things off.