Win10 system comes with Groove music player, which can be opened through the following methods:

1. Click on the start menu, find the Groove music player icon, and click to open it.

2. Press the Win+R keys to open the run window, enter "groove", and click OK to open.

3. Find the music file in the file explorer, right-click and select "Open with", then select Groove Music Player to open it.

4. Find the Groove music player icon in the taskbar and click to open it.

5. Search for "Groove Music" in the Windows App Store, download and install it and open it.