What features can expose a platform as a better music downloading site?

Whoever looking to download song mp3 (download lagu mp3) should search for a site that contains certain features, as listed below, necessary for a better downloading experience.
More songs
Let us assume that an mp3 downloader site has only ten songs in total and you cannot download anything else. You will hate such a site for sure. So, you should check whether the database of the website is somewhat decent to look into. You can even consider sites that contain only local songs. However, if a majority of local songs also is not available on the platform, it is a waste of time to scroll it.
Various formats
Most people think that there is a single format of mp3 for the songs and other audios. However, there is a range of formats for such files. Even you can find video files with mp4 format that plays the song alone without any moving action. Likewise, you may require any type of format for various purposes. So, you should check the available formats.
Out-of-app downloading
Let us assume that you need to have ten songs on your device for your school’s annual day performances. However, if the platform allows you to download those songs and play them within the app alone, it is of no use. You cannot send those ten songs to any other person in your school and the act of downloading itself would go useless. So, the app must allow people to download out of the app and store it on their devices. You should find such an mp3 downloader always. In-app downloading will work only until you have that app.
Different sizes
You may need a particular song with a size of 10MB or may need the same song at the purest quality with 50MB. So, you should check the available sizes also.