(@up      sampler select :sample-above)
(@down    sampler select :sample-below)
(@left    sampler select :sample-to-left)
(@right   sampler select :sample-to-right)
(@r       sampler record-toggle :sample-selected)
(@shift-R sampler record-cancel)
(@p       sampler play-sample :sample-selected)
(@P       sampler stop-sample :sample-selected)