Justin Bieber has been busy working on his new album, but yesterday he took some time off to relax.

"in the studio writing for #17MILLIONSTRONG !!! #BELIEVE #MUCHLOVE," he tweeted.  

Bieber was joined by Lil Twist for a skateboarding session, shortly after he finished a studio session with Lil Wayne.

"good time in the studio last night. back at it tonight. oh yeah...and big bro came thru... and when i say big bro i mean @LilTunechi . #BELIEVE IT #family," Bieber tweeted. 

He has also been hard at work in the studio with super producer Timbaland and he has praised Bieber's talent and work ethic. 

"working with @timbaland = sleep all day. work all night," Bieber tweeted. 

yo @justinbieber played me some of his joints last nite, craziee. the dude is super talented & our work ethnics are just alike. #hitsondeck," Timbaland tweeted. 

Over the past week, Bieber has worked with Chris Brown, Ludacris and Sean Garrett. 

Justin Bieber began working on his new album Believe last month, following his highly successful Christmas album, Under the Mistletoe.  

Tags: Justin Bieber Lil Wayne