Well... not so desperately, but I've been searching for ever. This beautiful sound is in lots of early 90s R&B/Pop songs, it's some sort of processed vibraphone or something. I'm pretty sure it must be part of the stock sound bank of one of the iconic ones from back in the day... like the Korg M1 or the Yamaha DX7, but I'm not really sure. So, sound gurus, I'm in your hands!
Here is the song, the sound is at 3:00 (it's literally 3 notes in approximately 3 secs) : Anointed - In The Need of Love/