‘Digi know’, you can find royalty free music on YouTube. Royalty free music is music where you do not have to pay for the rights to use it, if you use any popular music from the past 50 years you are most likely committing copyright infringement.Follow this link to find some royalty free music. (https://www.youtube.com/user/AudioLibraryEN/)
Listen to some of the music, they have a variety of styles in different playlists and when you have decided on one you like click the, free download button in the video (annotations will need to be turned on)
Remember some of these may need attribution, so check the description below the clip and copy and paste the relevant information.