From Patti Smith to Charlie Puth to someone named Lucy.

But what exactly is this bureau, and who are its other members?

Here’s what you oughta know about all the famous references and how they relate to the Chairman herself.

Taylor Swift The Tortured Poets Department publicity

Taylor Swift.Beth Garrabrant

This is the only time she references the TTPD on the album.

“I laughed in your face and said, ‘You’re not Dylan Thomas.

I’m notPatti Smith.

Patti Smith wearing a US air force shirt, Amsterdam, Netherlands, 9th October 1976

Patti Smith.Gijsbert Hanekroot/Redferns

This ain’t the Chelsea Hotel.

We’re modern idiots,'” Swift sings.

Pepper’s Lonely Hearts Club Band."

Charlie Puth

Charlie Puth.Photo by Mike Windle / Getty Images

Now, we can add Swift to that list.

Smith is a singer-songwriter known for fusing poetry and rock & roll.

She once defended Swift when discussing her celebrity status.

Lucy Dacus

Lucy Dacus.Ebru Yildiz

“It’s unbelievable to not be able to go anywhere, do anything, have messy hair.

And I’m sure that she’s trying to do something good.

She’s not trying to do something bad.

Jack-Antonoff

Jack Antonoff.Moog Music Inc/YouTube

Both Thomas and Smith have a history with the Chelsea Hotel mentioned in the lyrics.

This reference comes with a bit of history, though.

Thanks for the welcome, piano prince.”

We sense a collaboration coming.

The 1975 singer and Bridgers have also collaborated in the past.

So all of these musicians have known each other, or knownofeach other, for quite some time.

The Tortured Poets Departmentis out now.