Conversation so far:
What is Starsailor's silence is easy?
Silence is Easy is Starsailor's second album.
How many songs were on the album Silence is Easy by the band Starsailor?
There were 11 songs.
Did the album Silence is Easy win any awards or recognition?
The album charted well, but sales were sluggish in comparison to Starsailor's first album.
Did any of Starsailor's songs on the album Silence is Easy do well?
The first single was Silence Is Easy, which made the Top Ten (No. 9, Starsailor's highest placing).

Question: Who did they collaborate with on the album?
Self-contained rewrite: Who did the band Starsailor collaborate with on the album Silence is Easy?