I think this might be the one. I think Valentina's Weights EP is my favourite project of the year so far (and it has been quite a year for music already), primarily because of this song. Two things - if you attempt listen to this on your laptop speakers I will physically come through your screen and harm you. Second thing, if you cannot see how insanely beautiful this piece of music is please keep listening until you get there. I mean, just look at the waveform when it gets to 2:42! Funnily enough this version sounds slightly less polished than the version you can buy. Which you really must.
Valentina - Heart Of Glass by facultydigital
Valentina "Weights" EP - [iTunes]