Relaxing Music Collection, developed by Tiaozhisoft, is a free multimedia application for Android devices. It offers fifteen types of music playlists, including SPA, Coffee Time, Red Wine, and Dreamland, among others. With hundreds of customized background images, this app is perfect for creating a relaxing atmosphere.

The app allows you to play music in sequence, in random order, or repeat one music. You can also add music to your favorite playlist and customize it. The high-quality music and beautiful image backgrounds make for a soothing experience. The app also includes a sleep timer to help you fall asleep to your favorite music.

However, if you are an Android 7.0 user, you may experience connectivity issues. When the screen turns off, the app may go into dormant state and stop connecting to the WiFi. To avoid this, go to the settings and choose "WiFi," turn on the function "keep connecting the WiFi, even if dormant state," and then go to the "battery" setting and remove the app from the "System Optimization."

Overall, Relaxing Music Collection is a great app for those who want to unwind and relax to high-quality music. It is compatible with phones and tablets, making it accessible to a wide range of users.