For Pianist Michael Wollny, songs are like ghosts. His new album "Ghosts" is a gathering of some of the ghosts that regularly haunt him. Typically for Wollny, they range from classics like Franz Schubert's "Erlkonig" to jazz standards, film music, songs with a certain fragility by Nick Cave, say, or the band Timber Timbre, and also include his own darkly evocative original compositions.

For Pianist Michael Wollny, songs are like ghosts. His new album "Ghosts" is a gathering of some of the ghosts that regularly haunt him. Typically for Wollny, they range from classics like Franz Schubert's "Erlkonig" to jazz standards, film music, songs with a certain fragility by Nick Cave, say, or the band Timber Timbre, and also include his own darkly evocative original compositions.