I was playing Machinarium on my iPad a while ago and I noticed this song when the robot was in the bar. It has a lead guitar, accompanied by percussion and bass, and it has a lovely bossa nova feel to it. After a few fruitless Google search around, I decided to transcribe the piece. Four months in, and it's fruitful!

You can get the PDF score and MIDI, and watch it on Youtube. Enjoy!