Related for Chullin 52:42

Should the first day fall on the eve of Sabbath they sound a plain note, but do not sound a tremolo. How do they sound? With a single plain, and not a tremulous, note. “The flute-playing supersedes the Sabbath” - the words of Rabbi Yose ben Rabbi Yehudah. But the sages say, “It does not supersede even the festival itself.”