[י"ז תמוז, ה'תשל"ג]
שלום וברכה!
בתמהון
גדול
קראתי שאלתו במכתבו מיום [טו"ב תמוז]
בנוגע לשירת נשים
– ופס"ד
ברור
לאיסור
בש"ס ופוסקים
.
Yud-Zayin Tammuz, 5733.
Shalom u'Vrachah!
With great astonishment I read your question in your letter from the fifteenth of Tammuz regarding women's singing—and it is a clear ruling in Shulchan Aruch and the poskim that it is forbidden.
Summary
The Rebbe emphasizes that listening to women's singing is clearly prohibited according to halachah, as stated in Shulchan Aruch and by the poskim.