Sean Lennon, son of John Lennon and Yoko Ono, just released a new song that was co written by Carrie Fisher. The new song is called “Bird Song,” and according to the description on Soundcloud it was written “years ago.” After Fisher’s passing, long time friend Sean Lennon recruited Willow Smith as the background vocalist and recorded “Bird Song” in less than a day.

“When she died I just felt I had to record it,” said Lennon in an interview about the sentimental track. “This is only a demo unmixed, we only had a few hours to record it. But the lyrics she wrote with me I think are marvelous. Carrie and I used to stay up til dawn chatting and pontificating about life. They were my best moments. Anyway… we wrote a song about staying up too late and hearing the birds sing. Willow Smith is a prodigal angel and was generous enough to lend her golden voice to this little tune.”

The whimsical song seems to match Carrie Fisher’s lively and infectious personality, and begins with:

Love comes on cat’s feet
It circles the corners
It sits by the window and whispers…
“Mine! All mine! all mine!”

My arm fell asleep
And dreamt it was your arm
Hush lest we break the spell, oh well, oh well…

Check below to listen to the whole song yourself.

Just last month, Lennon and fellow band mates the Eccentronic Research Council and Fat White Family joined together to release their debut LP as the “semi-functional ouija pop group” Moonlandingz. This album will follow Lennon’s June 2016 release The Monolith of Phobos.