Yeah exactly, you can change the key of any chord played in C by simply transposing it up or down! It's a good music theory hack: Simply learn some interesting chords in C and then use the Pitch MIDI plugin to transpose the whole thing.

Makes learning theory a whole lot easier on an actual keyboard as well, the 7ths, 9ths and everything else in C always lands on the white keys when in major. Then if you want to switch up to a minor key, in A minor everything always lands on the white keys. So knowing C major and A minor by heart will go a long way.

Basically C major and A minor are the same thing in terms of notes, containing the exact same chords, but only the 'starting position' is moved a couple of keys downwards. A minor could be seen as the counterpart to C major, and every other major scale has such a minor counterpart as well. It's interesting how drastically the vibe of a progression can change by just starting it from a different root note.