Elon Musk held a 2 a.m. livestream to test a 'new mic' where he spammed listeners with fart and rooster noises for 10 minutes while laughing

• Elon Musk co-hosted a short livestream on Twitter Spaces at 2 a.m. on Tuesday.
• The Twitter CEO spammed listeners with a variety of sounds, from fart noises to roosters crowing.

In the wee hours of Tuesday morning, Elon Musk co-hosted a 10-minute livestream in which he treated more than 42,000 Twitter users to the dulcet tones of him testing out a "new mic."

Musk co-hosted the Twitter Space livestream with Jason Calacanis, an investor and podcaster. The livestream primarily involved Musk laughing and experimenting with a voice transformer that distorted his voice.

"Sounds like helium from a balloon," Calacanis said at one point, to laughter from Musk.

Calacanis then asked Musk what the time was in California.

"Uhm, I'm in — in Austin here, it's 2 a.m.," Musk said. "Wait. There's a whole sound board. Can you see the sound board?"

The livestream audience was then treated to what appeared to be the sound of flushing and water flowing.

"Dude, you can't go on Twitter Spaces when you're in the bathroom, bro," Calacanis said.

Musk and Calacanis proceeded to test various functions on their sound board, ranging from fart noises and static to the sound of roosters crowing — all while dissolving into laughter.

After a minute or so of spamming listeners with sounds, Musk announced his voice was "back to normal" and that he thought the voice-changing function was "kind of entertaining."

"Well, I've gotta go to bed. Talk to you later," Musk said, before logging off from the Twitter Space.

Musk is, in his own words, "fairly nocturnal," and has said he usually goes to bed around 3 a.m. The Twitter CEO is known for working late — in November, he sent an email at midnight to Twitter staff telling them to work "long hours at high intensity" or quit their jobs.

He's also known for his erratic behavior on Twitter, including an April 2022 tweet saying he wanted to buy Coca Cola to "put the cocaine back" in the soft drink.

It's unclear if Musk was doing the test on Twitter Spaces for a work-related purpose, or just for fun. Musk did not immediately respond to Insider's request for comment.

Musk on Monday once again became the richest person in the world, per the Bloomberg Billionaire's Index. He now has a net worth of $187.1 billion.