That he was there during the siege has been considered likely on the evidence of one of his motets, composed around that time, Congregati sunt inimici nostri.
Το ότι, βρισκόταν εκεί κατά τη διάρκεια της πολιορκίας, θεωρήθηκε πιθανό από τα στοιχεία ενός από τα μοτέτα του, που συνέθετε εκείνη την εποχή, το Congregati sunt inimici nostri.