Piano patch that extends beyond two octaves?

Hi, I’ve been connecting my 49-key MIDI keyboard to my Organelle M in order to learn more piano theory. However, I haven’t been able to find a great piano patch that would allow me to make full use of all the keys. Seems most synth patches are (understandably) made to use just the two octaves within the Organelle’s key-range. Anyone know of any basic, clean keyboard synths that would be good to learn with?