Oncidium Twinkle (I think?) in Bloom

[mauraec]

This poor little thing is really at the end of a great burst of blooms - and it has suffered a few nippy (40s) nights down here in FL. When I bought it, I was told it's an Oncid. Twinkle, but no tag or anything. I've never had one before, so I'm relying on confirmation from the OT members for this. The fragrance is just delightful. Blooms are about 1/2" long, 1/3" wide. White with yellow.