Strange but pleasant chime

[Tacomaster]

I'm in a 2013 Tacoma with the TRD package, only 90k miles. Opened the door today and it made an Unusual doorbell type Ding-Dong noise. It wasn't obnoxious it was quite pleasant it was just a gentle little Ding-Dong, not loud, don't know how to describe it. I've never heard it before and I tried to recreate it and couldn't. the only possible difference That it could be is that I had to remove both of my rear headrests to haul some furniture but I really doubt that could be what it is. Anybody have any ideas?

 

[Rock62]

Have you checked the Owner's Manual?

Did you leave the keys in the ignition?
Did you place the AT in P?

Chimes are typically reminders that the Driver didn't do something,

 

[JayQQ97]

the nissan truck chime sounds worse than the tacoma chime
to me anyways