פירוש על סוטה 9:1

Similarly they decreed not to play [music] with instruments, and musical devices, and all things that make music to rejoice with them. {Gloss: There are those who say, [the prohibition is] specifically for those whom they regularly play them, like for kings who stand and rest to instruments or in the house of a feast. (Tur) } It is forbidden to make them heard because of the destruction, and even song by mouth over wine is forbidden, as it says: "In song one may not drink wine" (Isiah 24:9). And all of Israel is already accustomed to saying words of praise or songs of thanks and remembering the goodnes of the holy one blessed be he over wine. {Gloss: Similarly for the need of a Mitzvah, like for the house of a Groom and Bride, all this is permitted. (Tosefot, Smag, and Hagehot Maymoni)}

And similarly, (the Sages) decreed on the crowns of grooms not to wear at all, and not dress the groom on his head with any wreath, as it says "Remove the turban and lift off the crown" (Ezekiel 23:31). And similarly it was decreed on the crown of a Bride if it is silver yet of thread is permissible. And this is specifically on a bride and groom, but other people, men and women, it was not decreed.