# Transposing MIDI in Reaper Right-click, mouse over to "Event properties," and then type in "+1o" in the pitch box. You can also hold cmd+arrow to transpose up or down an octave.[^1] [^1]: [How do I shift a MIDI file up and octave? : r/Reaper](https://www.reddit.com/r/Reaper/comments/n6yckw/how_do_i_shift_a_midi_file_up_and_octave/)