I wish I could give this 5 stars because it is an innovative idea and super useful when implemented effectively. The most effective use for this would be in a basketball pep band setting, or outdoors (parade, marching, busking, etc.). Flip folders have been around for a long time, and the general concept is half-size printed music that each gets its own clear sleeve. This allows for changing out of songs and flipping quickly to the one you're looking for. I also think the size of the notes is generally readable, though it can be difficult if the notation hasn't been adjusted for small printing. The downside to Flip Folders is that you are limited to the number of "windows" or sleeves, and having 50 windows makes the whole thing unwieldy and impractical. In a perfect world, musicians would always have their music memorized or have a stand that could allow unimpeded forward vision for both players and audiences. Sometimes this is not possible because of the pressures of the environment - too much music to learn, quickly switching from one piece to another, changing out pieces from show to show without time to learn new music in between. This is where this little clip performs more admirably than the ol' faithful Flip Folder.Enter the phone mount. This amounts to a wash on features comparison in my view: harder to read, but smaller and therefore easier to see around/over, no extra printing required, and easily compatible with a range of phones that everyone now has at their easy disposal. However, as far as technical use goes, I had trouble getting this adjusted on my bell securely and upright. I tried several different configurations so that it didn't impede my playing fingers or the instrument itself, and when I finally found the right position, I had to put my instrument down and use both hands to install the mount, which took at least 2 minutes of adjusting and carefully threading the screw around the delicate brass parts. If you're in a pep band, this adjustment period could mean that you've missed an entire piece. So, in that situation, you leave it on the bell. This means that you need to be able to quickly access your phone while it is in the mount, or be able to remove it quickly and easily. On that score, another mark against this little mount because I had to remove my case entirely just to get the clip to receive my phone. I have a standard drop-resistant case (also important in this scenario) and a popsocket, increasing the thickness of the phone. I have had no trouble using this configuration for other phone clips - bike mounts, car mounts, etc. - so I know it can be done, and securely. Finally, once it was in the clip and the mount was secure on the trumpet, I was able to move freely around the room while playing with confidence. The extra cushion on the underside of the mount clip allowed for a good grip without injuring the instrument, and the foam in the phone side of the mount meant that the (now caseless) phone was able to stay in nicely. I like that you can see around the phone to a conductor or the audience, and the distance from my eyes to the music was usable enough to run a sheet music video from youtube and play comfortably. While this could use some improving, it is a slight improvement on a Flip Folder and could work if you're looking for an upgrade. For the price, I wish it was more versatile. I tried, and failed, to find a way for this to work on a trombone - quite comical. It might work on a euphonium or tuba but needs an extension to use it with the trombone, otherwise you go cross-eyed trying to read the notes.

Had no issues attaching to a student trumpet and holding a Samsung s21 fe with it. Holds phone when moving around with marching band. No drops or slides, stays in place very well. Good value imo