La La La- you might have seen the video but if you have I'm pretty sure you would understand it's about a child covering there ears so they can't hear what your saying and saying well lalala haha! I'm sure you've done it as a child.
2583 /kaná¹n (rule, standard) was used for a summary of orthodox Christian doctrine in the early Church (its consensual theology) â called the rule (kanÅn) of truth or rule of faith (regula fidei).
Gradual can also refer to a book collecting all the musical items of the Mass. The official such book for the Roman Rite is the Roman Gradual (in Latin, Graduale Romanum). Other such books include the Dominican Gradual.