Use it! But don't forget to bring it back to a standard key. You might forget it if you fall in love with the song and the female singer. It happened to me. I was using two keyboards I transposed the bottom one but not the top one because I wil not use the top one for that particular song. When you do the second song, ouch!! figure it out how it sounds. Then you have to hurry going to the keyboard menu to transpose it back to a regular key.