The orchestra members have gathered at Stanford’s Center for Computer Research in Music and Acoustics to rehearse a new kind of musical composition. Together, sitting on meditation pillows in front of MacBooks, they create songs that stretch the definition of music. The orchestra plays laptops like accordions, turns video games into musical scores, and harnesses face-tracking software to turn webcams into instruments. But at this rehearsal, the Stanford Laptop Orchestra (SLOrk) looks less like the symphony of the future and more like an overworked IT department.