You don't need a fancy card for music production if you're not recording external audio. As long as it has decently good quality output and you're either using amplified speakers, a headphone amp, or it has a good enough internal amp, you can get away with internal audio.

You'd be surprised at how many music producers do all their work on a laptop and headphones these days. If you just want to mess around, any internal card will do for sure.

This applies to all DAW work on Linux regardless of what app you use. LMMS, Ardour, it's all the same. JACK runs peefectly fine on internal cards.