Possible amount of signatures with MuSig

With MultiSig, up to 20 signatures may be used in a treshhold signature scheme (What are the limits of m and n in m-of-n multisig addresses?).

As far as I understand, there should be no hardcoded limit with MuSig, as to the Blockchain every scheme would always look like just one single signature (from one single key-pair), even if in reality those were multiple signatures that just were aggregated into one.

Is there anyhting else that limits the amount of signatures that can be used with MuSig, or is this number of possible signatures essentially infinite?