Yes, CMME (www.cmme.org) is now future-proof: verovio supports the import of CMME XML files, being a de facto CMME2MEI-converter! 🙂
👉 https://book.verovio.org/toolkit-reference/input-formats.html#cmme
We spent a lovely couple of days in Paris fixing this 🤓 Kudos to David, Laurent, Anna, Martha, Frans and the support of CESR Tours / Biblissima 🙏