You will surely find the most suitable one online. Search online for all the music downloaders for Mac available in the market.
You will be able to download and listen to the songs and audio files offline, without the need for any Internet connection. There are numerous music downloader apps that you can use to download and store music in your Mac. If you use a suitable music downloader for Mac, you no longer will have to depend on your Internet connection to listen to the favorite music. You can simply download and install one of these applications and you will be able to download music from just almost any websites on the Internet.
There are quite a few free music downloader for Mac (MacOS 10.12 Sierra and 10.13 High Sierra included) that are available in the market for free download. You can download and listen to all your favorite songs using your Mac.