The singer will play tracks from his upcoming new album Here's What I Believe, as well as answer questions submitted by fans.
The live stream - hosted by MUZU - will take place from 4pm today (August 17). Check back to watch the session below, later today.
McElderry's fourth studio album Here's What I Believe will be released in the UK on September 10. The star has written three songs for the collection, including the title track.
"I can't wait for you to hear all of the stuff," McElderry said previously. "It's been going on since around January time, so it's been a long time coming for me."
Here's What I Believe follows McElderry's 2010 debut album Wide Awake, as well as 2011's Classic and Classic Christmas.
Watch Joe McElderry's live session from 4pm on August 17, below:
Joe McElderry - Live chat on MUZU.TV