Seems like my musical preferences switch very quick and extreme these days. When I'm on the train home I use to listen to guitar sound in every variation and later at home I choose some ambient or something like the Grandbrothers. It is very warm and depressant sound. Mostly a classical piano dominates and a bit of ambient sound is added to the piaano chords. They describe their sound on bandcamp this way:
Grandbrothers are Erol Sarp and Lukas Vogel. After meeting at university in Dusseldorf, Erol and Lukas formed Grandbrothers to tie together their respective musical backgrounds and disciplines: Erol is a trained jazz pianist, while Lukas constructs synthesizers at Access Music. Together, they create a sound that combines classical composition with modern, experimental production and sound design.
Just music to relax. If you are in the mood for something new - give them an ear.