I suppose that the “playlists” on the left are your playlists, as well as other people's playlists that you have liked. Liking a playlist will add it to the “playlists” section in the vertical menu bar on the left (not the top). I initially didn’t know why someone else’s playlist were showing up in my list of playlists, but then I noticed that I had liked their playlist. I found out that they weren’t actually my playlists. Going back on the desktop, I didn’t see these playlists when I clicked on “playlists” on the top, which is to the right of your name. These playlists were in the vertical menu bar on the left, and I couldn’t delete these particular playlists.

I was trying to delete playlists on the desktop, but I noticed some extra playlists there were appearing in my tablet. I just found out another alternative for grabbing someone’s playlist by accident (though the playlist appears in your channel, you don’t actually copy their playlist to your own collection of playlists).

Support major video format - mp4, mp3, flash(flv), WebM, 3gp for better viewing experience on other devices: iPad, iPhone, iPod, Galaxy, Kindle, Laptop, Touchpad, Smart TV, and many more.Liking a playlist will add it to the “playlists” section in the vertical menu bar on the left Save, organize and manage downloaded videos for easy & offline access. This software has built-in download accelerator to make use of your full internet bandwidth, up to 4 times faster or even more. With this software, you can quickly download high-quality, high-definition and full HD videos or music from YouTube and enjoy them offline on other media players - TV, iPhone, iPad, MP4 Players, or MP3 players. The software is easy to use, just copy and paste the URL for the video you want to download, sit back and wait for the download to complete in 4x faster speed. The main panel shows all videos with status and progress bar, so you can easily see which one is completed and which one is still in the downloading process. Like the Android app, iPhone users can also download music by tapping on a song's cover art, or an album or playlist's detail page and hitting the download arrow. The downloaded videos can be easily saved to any folder of your choice. To download a song or playlist on YouTube Music's iPhone app, click on the Menu button and and then tap on Download. This software supports video playlist and music playlist download in multi-threading mode, just copy and paste the playlist URL and all the videos of the playlist will be added to download queue.

Download playlist from youtube music