I have a Alesis V49 MIDI keyboard, it only has a USB type-A output. In order to use it as a synthesizer, I currently connect it to my PC via USB and use specific software to produce sound.
I want to do the same but using a Raspberry Pi instead of my PC, for a more lightweight setup. Is Pi's hardware sufficient to be able to run a simple synth program and output the sound to HDMI (ideally, spdif optical)? I don't need CPU-hungry effects, just a simple piano sound.
What version of Raspberry should I get and what software/drivers is necessary to put on top of, say, Ubuntu?