Basso sound effect randomly heard


macrumors 6502a
Original poster
Oct 28, 2003
Philadelphia, PA
Recently I've noticed my Mac Pro playing the Basso sound effect every once in awhile, seemingly at random. It just happened a moment ago while I was Macrumors foruming, so I thought I'd see if anyone has some insight.

Running right now in my dock is Activity Monitor, Dashboard, iTunes, Safari, Mail, Address Book, Preview, and Chronosync. Connect360 is up in my menubar (xbox isn't on, though) and Quicksilver is running in the background. I'm connected to the net through Airport, and I'm using a bluetooth Mighty Mouse and Apple keyboard. My iPod is plugged in and mounted on the desktop.

My default alert sound is Pop. As far as I can figure out, I don't have anything running that should be giving me this Basso sound effect, and no window pops up or apps bounce in the Dock. The Basso sound doesn't happen too often, but I've noticed it probably 3 or 4 times this week.

Anyone have any ideas?


macrumors 65816
Apr 26, 2002
Meat Space
If you haven't selected Basso as an alert sound in any of your running apps, I think I might be tempted to delete the sound and see if the random error changes to another sound or disappears entirely. You can find the Basso file here: HDD>System>Library>Sound. I'd save the Basso file in case you want to reinstall it later (i.e. if removing it doesn't solve the problem).


macrumors newbie
Feb 9, 2007
Same problem with my MacBook

The same thing happens to me. Please post a solution if you find one as I've tried everything in the options and it's starting to get annoying.


macrumors 6502
Nov 1, 2006
East Lansing, Michigan
Maybe the computer is just ripping one. I always thought thats what basso sounded like anyway...well, maybe with a musical twist. Either way, cut it some slack, man.


macrumors newbie
Jun 6, 2018
Same problem, years later, in case anyone else is Googling it. Traced it to a Calendar alert:
"Alert: Custom... message with sound “Basso” 9 hours after".
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