I have a Privia PX 150 keyboard.

I want to start recording myself playing so I can show my friends and family videos of my progress.

So what I had in mind was film my hands, but record the audio separately and add the audio over the video because I don't want the background sounds like me pressing the keys or my computer fan humming behind me. I thought I could do this with the MIDI-USB port on the back of the piano. But I didn't know MIDI sounds were so bad. I want to record the sound that comes directly from my piano to my computer. But not just the notes with some cheesy sound that a MIDI program uses. I want it to sound authentic. The PX 150 only has that one midi port though.

  • Just to be 'that guy' : MIDI itself actually has no 'sounds' - it's a control protocol. It's possible to control sounds via MIDI that are as good as, or better than, your Casio. Commented Feb 26, 2015 at 21:49
  • To elaborate on @topomorto : MIDI is just 'This key was pressed this hard'. You can then use any MIDI-capable software to generate piano sounds - sometimes better than your keyboard can do itself (based on my experience with the PX110). Examples I have used are Cubase Halion and Native Instruments Akoustik Piano, but these generally come with a hefty price tag.
    – Sanchises
    Commented May 26, 2015 at 20:32
  • I do not see how this question is about musical performance or theory.
    – Neil Meyer
    Commented Jul 25, 2015 at 17:37

3 Answers 3


I will explain below how to record the audio output from your Privia to your computer.

But from the question, it appears that your goal is to produce a video, with a separate, clean audio track to go with the video.

To do this, you will want to record both the video and audio - (with all the ambient noise and extraneous sounds you want to eliminate), with your video recorder - at the same time you are recording your clean audio from the direct signal being output from the Privia. In order for your video recorder to pick up the audio, you will need to be able to send the sound from keyboard to an external monitor and feed the clean direct audio output to your interface - at the same time.

The reason you do this, is to make it easier to synchronize the clean audio to the video. On any decent video editing program you will be able to import the audio only file saved on your computer and line it up under your video's audio file. By having both audio wave forms on the screen, you can zoom in to any section and match them visually and just drag one to line up precisely with the other. Find a part that has some obvious dynamic peaks. Then you mute the sound from the camera while playing the clean audio file, to be sure it syncs up perfectly with the video. Then you render (mix/finalize) your video with the sound file from the video recorder muted. You end up with a video of your hands playing, and a perfectly synchronized audio that is nice and clean. Having the the audio from the video to visually align with the clean audio wave form will save a ton of wasted trial and error time.

Now for recording the clean audio signal output from your Privia. As tarun mentioned, you should use some type of interface to plug the Privia into and the interface will plug into your computer. The headphone/line out jack on the Privia is where you will plug your cable that will run into your interface. You will be recording the exact audio signal you would hear through the headphones.

The Scarlett 2i2 Scarlett 2i2 Focusrite that tarun uses appears to have exactly what you need to produce a video with clean audio. It allows you to run a signal to a audio monitor (so you and the camera can hear the output of the keyboard) while you record video of your hands while recording one audio track to the video recorder and the second clean audio track to your computer. You will need a DAW (Digital Audio Workstation) program as mentioned by tarun to convert the output into a file your computer will recognize (WAV, Mp3). Many of the audio interface devices come bundled with this type software.

Another way to do what you want to do, and much more, is to use a multi track recording device that does not require DAW software and will save your music to an SD card. I use a Boss BR 800 and I do something very similar with audio and video. Using the BR 800 I can send the signal from my instrument to both a monitor and record it directly through the output jack and a cable, so my video recorder will pick up the sound I am playing on my instrument that will be the same sound that is going directly through a cable from my instrument to the recorder. As mentioned above this will make the synchronization easier.

To learn more about the Boss BR 800 and other interfaces that will allow you to accomplish your goal - read this Record Instrument To Computer

You plug your Privia into an interface or recorder the same way you would plug a guitar into one. Run the appropriate cable (such as a 1/4 inch TRS to 1/4 inch TRS cable) from headphone/line out on Privia, to line in on interface - same as a guitar.

Good luck and have fun!

  • Is it possible to use the digital piano speakers itself as the audio monitor? I don't have separate external speakers; ideally I could record the audio into my computer while listening/recording the audio from the speaker output to do this merge.
    – David
    Commented Sep 14, 2021 at 17:01
  • If there is a separate audio output on your digital piano other than a headphone jack, then certainly you could use the built in speakers on the piano as your audio monitor. But I would expect that if you are using the headphone jack as a line out to run the audio to an interface or recording device, the built in speakers would be automatically muted unless you could figure out how to bypass the switch that turns off the speakers when you plug in headphones. I personally would not attempt that because I don't know enough about circuitry and electronics to mess with it. Commented Sep 15, 2021 at 18:30

I want to shares on how my way to records some stuff of music recording with videos :

so you will need these prerequisites : 1. keyboard 2. soundcard (e.g behringer UCA222) 3. jack cable 4. DAW (e.g nuendo) 5. Video Editor (e.g adobe premiere)

tips :

  • connect your keyboard to soundcard via jack cable, and plug that soundcard to your PC-DAW installed.
  • prepare your camera to record your videos, and get recorded
  • while your camera is role-on, just plays your keyboard and records it you your DAW
  • so you have a video(recorded on camera) and audio(recorded on your pc), merge them in your video editor(e.g. adobe premiere)

that's all

  • You simply merge an audio-less video recording with the audio stored on your PC? Is that hard to do? The comment above says the easiest way to do that is to also have the video record audio as well so you can line up the soundwaves and mute the video-recorded audio; is this overkill in your opinion?
    – David
    Commented Sep 14, 2021 at 17:02

At the most basic level, to record the direct output from a digital piano, it'll need a line out jack. You'll need to connect to some kind of audio interface on your computer, and then use a DAW (like Audacity, Garage Band, Reaper or others) to record the sound.

For home recording, audio interfaces typically take in XLR or 1/8" plugs and connect to a computer via USB.

I have a fairly basic setup and I use a Scarlett 2i2 as mine.

The USB connection you have is for a midi connection and will not serve to record the actual audio that the keyboard outputs.

Edit: Based on the description of this keyboard on amazon, it looks like it has a combined headphones/line out jack. You may be able to use that to output sound.

Edit 2: As a side note, if you are unfamiliar with recording techniques, this course is a great introduction to music production.

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