The best alternatives to Looking Glass are Apple, Apple Music, and Apple Music API. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Looking Glass?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Discover and listen. In perfect harmony. Sing along to your favorite songs with lyrics view, find new music just by seeing what your friends are into, and listen to playlists curated for every occasion. That’s just part of what makes Apple Music the ultimate music streaming experience.