If you're looking for a Splash alternative, WarpSound is another strong contender. It uses AI to generate music in real time, producing high-quality music that's grounded in music theory and song structure. It's geared for interactive music, streaming and games, so it's adaptable for a wide range of creative uses.
Another good alternative is Musicfy, which has an easy interface for producing high-quality music with different voices. It's got features like AI voice artists, text-to-music conversion and original song composition, so even those with no musical background can use it. It's available in different subscription levels for hobbyists and pros.
If you want to be more in control of the music generation process, CassetteAI lets you generate music to your heart's content, with options for genre, mood and instrumentation. It's good for beginners and pros, with a simple interface and no claims of ownership by the service, so you keep control over your music.