Four AI composition tools easy enough to soundtrack your film masterpiece

It used to be you could spend an afternoon drumming up a home movie with your little sister, soundtrack it with your favorite mixtape cuts, and upload it to the Internet for sharing without a care. What's an amateur-at-best musician to do? I may have marched on a collegiate snare line (and therefore understand rhythm, phrasings, and tempo), but my ability to create melody probably stopped with middle school recorder lessons. Luckily, we musically challenged filmmakers and podcasters now have robots. A number of high-profile AI composition initiatives have surfaced in recent years--perhaps most notably, Sony's Flow Machine released its debut album in January--and slowly but surely these tools are moving from the research labs and professional production studios into publicly available spaces.