What is the name of this instrument or sound?
No all jokes aside
That's a very poor bit rate recording
Either intended or not
It is also multiple sounds
Layered synthesised sounds most likely created with various oscillators set to sine wave then parameters tweaked to give it depth and character as opposed to a high pitched beep tone.
I'd recreate it by starting with one sine wave oscillator
Play with Lfos etc
Add a second oscillator same as above but use the Lfo on a different parameter or 2
Then detune again.
Add some reverb
Set a fast attack on the adsr envelope with a large decay and sustain , play with release until you're happy.
Then you need the high pitch synth layers playing an accompanying melody. Again based on a sine wave at a very high octave, perhaps a lot closer to the original waveform
Big Girls Cry :o Great filter I'm useless at this stuff but to me it sounds like a chime like synth.