Yesterday at H&M, I heard a really awesome song, but it was too loud for me to catch too much of the lyrics. I'm hoping this will ring a bell for someone:

The very first word of the song is "goodbye", and towards the end there's a "tu tu ru" type scatting. It's sort of alternative/indie/pop-rock sound, maybe some vague electronic overtones. The singer is definitely female - I thought it sounded a bit like Ladytron or Blonde Redhead, or even Garbage, but a bit more mainstream - there was a lot of electric guitars. It was pretty melancholy.

I know it's very little to go on, but if anyone can help, thank you!