Twisting exercises like this are great to mobilise your upper spine, release tension and can reduce and prevent back pain, neck pain and headaches. These are really important for people who spend a lot of the day sitting or static in one position. 

Move on to this exercise once you’ve done a bit of release on the foam roller with this one:
48 – Upper Back: Release On Foam Roller

You can also try this one which can be done in your chair:
67 – Chair Exercises: Twist: Mobilisation Upper Back