Poppy Philly songwriting duo Rubber is returning this week with its latest single, and a livestream to celebrate.

XPN listeners got an early listen to “Little Sinews” this afternoon on the Philly Local Pick — for everybody else, the downbeat R&B jam, a collaboration with Kyle Sparkman and Melvin Darrell, hits streaming services Thursday, October 15th.

As the band describes it via email, the instrumental components of “Little Sinews” came together in an organic jam between Darrell on drums, Sparkman on guitar, and John Della Franco on bass. Once this was laid down, vocalist Andrew Loper took the music home to work on the words, which meditate on the idea of personal growth in a long-term relationship. “This song felt so effortless, from the collaborative writing to the fine-tuning, the whole progression felt so natural,” writes the band. “We hope this song can be comforting, wrapping the listener up in a warm embrace as the days get cooler and shorter.”

Rubber’s “Little Sinews” is out Thursday, and can be pre-saved here. The band will play a livestream concert on Instagram on Wednesday, October 14th at 10:30 p.m. ET to celebrate the new song. Watch at @rubberofficial and listen to their music below.