I must remind everyone that we just started the period known as the 'three weeks'. We are not supposed to listen to instrumental music during these three weeks. It is during this period, till Tish B'Av, that we mourn the destruction of both of the Holy Temples and other tragedies which have afflicted the Jewish people through history.
Let us attempt to honor this tradition and reduce the amount of music which we listen to.
It is said that one who doesn't mourn the destruction of the Temple is as guilty as those who destroyed it.
http://www.aish.com/h/9av/oal/48943916.html
Overview and laws of the period leading up to Tisha B'Av.
The "Three Weeks" between the 17th of Tammuz and the Tisha B'Av have historically been days of misfortune and calamity for the Jewish people. During this time, both the First and Second Temples were destroyed, amongst other terrible tragedies.
These days are referred to as the period "within the straits" (bein hametzarim), in accordance with the verse: "all her oppressors have overtaken her within the straits" (Lamentations 1:3).
On Shabbat during the Three Weeks, the Haftorahs are taken from chapters in Isaiah and Jeremiah dealing with the Temple's destruction and the exile of the Jewish people.
During this time, various aspects of mourning are observed by the entire nation. We minimize joy and celebration. And, since the attribute of Divine judgement (“din”) is acutely felt, we avoid potentially dangerous or risky endeavors.
ASPECTS OF MOURNING DURING THE THREE WEEKS
No weddings are held. (However, engagement ceremonies are permitted.)
We do not listen to music.
We avoid all public celebrations -- especially those which involve singing, dancing and musical accompaniment.
We avoid pleasure trips or other unusually entertaining activities.
No haircuts or shaving. (Fingernails may be clipped up until the week in which Tisha B'Av falls.)
We do not say the blessing She-hechianu on new food or clothes, except on Shabbat.
THE NINE DAYS
The period commencing with Rosh Chodesh Av is called the "Nine Days." During this time, a stricter level of mourning is observed, in accordance with the Talmudic dictum (Ta'anit 26): "When the month of Av begins, we reduce our joy."
(1) We avoid purchasing any items that bring great joy.
(2) We suspend home improvements, or the planting of trees and flowers.
(3) We avoid litigation with non-Jews, since fortune is inauspicious at this time.
(4) We abstain from the consumption of meat (including poultry) and wine. These foods are symbolic of the Temple service, and are generally expressions of celebration and joy.
On Shabbat, meat and wine are permitted. This applies also to any other seuduat mitzvah -- for example, at a Brit Milah or at the completion of a tractate of Talmud.
Wine from Havdallah should be given to a child to drink.
(5) We refrain from wearing newly laundered garments, or laundering any clothes.
If the "freshness" has been taken out of a garment prior to the Nine Days, it may be worn.
Fresh clothes may be worn for Shabbat.
The clothing of small children, which gets soiled frequently, may be laundered during the Nine Days.
Clothes may not be laundered even if done in preparation for after Tisha B'Av, or even if done by a non-Jew.
(6) We do not bathe for pleasure.
It is permitted to bathe in order to remove dirt or perspiration, or for medical reasons. This may be done only in cool water.
Furthermore, the body should be washed in parts, rather than all at one time.
Bathing in warm water is permitted on Friday in honor of Shabbat.
with thanks to Rabbi Moshe Lazerus
See also:
http://www.ou.org/yerushalayim/17betammuz/
the 17th of tammuz
Printable VersionThe 17th day in the Jewish month of Tammuz, Jews the world over fast and lament to commemorate the many calamities that have befallen our people on this ominous day.
The purpose of such fasts in the Jewish calendar is, according to Rabbi Eliyahu Kitov's Book of Our Heritage, "to awaken hearts towards repentance through recalling our forefathers' misdeeds; misdeeds which led to calamities..."
A HISTORIC DAY OF CALAMITY
Going all the way back to Biblical times, Moses descended Mount Sinai on this day and, upon seeing the Golden Calf broke the first set of Tablets carrying the Ten Commandments (Shemot 32:19, Mishna Taanit 28b).
In the First Temple Era: The priests in the First Temple stopped offering the daily sacrifice on this day (Taanit 28b) due to the shortage of sheep during the siege and the next year 3184 (586 BCE), the walls of Jerusalem were breached after many months of siege by Nebuchadnezzar and his Babylonian forces.
In Melachim II 21:7 we find that King Menashe, one of the worst of the Jewish kings, had an idol placed in the Holy Sanctuary of the Temple, according to tradition on this date. The Talmud, in Masechet Taanit 28b, says that in the time of the Roman persecution, Apostomos, captain of the occupation forces, did the same, and publicly burned the Torah - both acts considered open blasphemy and desecration. These were followed by Titus and Rome breaching the walls of Jerusalem in 3760 (70 CE) and Pope Gregory IX ordering the confiscation of all manuscripts of the Talmud in 4999 (1239).
In later years this day continued to be a dark one for Jews. In 1391, more than 4,000 Jews were killed in Toledo and Jaen, Spain and in 4319 (1559) the Jewish Quarter of Prague was burned and looted.
The Kovno ghetto was liquidated on this day in 5704 (1944) and in 5730 (1970) Libya ordered the confiscation of Jewish property.
Other interesting occurrences on this day include Noach sending out the first dove to see if the Flood waters had receded, (Bereishit 8:8) in 1650 (2100 BCE); Moshe Rabbeinu destroying the golden calf, (Shemot 32:20, Seder Olam 6, Taanit 30b - Rashi) and then ascending back up Har Sinai for the second time where he spent the next forty days pleading for forgiveness for the sin of the golden calf, (Shemot 33:11, Rashi).
The Fast of the Fourth Month
The Mishna in Ta'anit 4:8 associates the 17th of Tammuz as the "Fast of the Fourth Month" mentioned by the prophet Zechariah. According to this Mishna, the 17th of Tammuz will be transformed in the messianic era in a day that"shall be joy to the House of Judah" full of "gladness and cheerful feasts".
Customs
The fast of the 17th of Tammuz is observed from the break of dawn until night (as defined by halacha), one of four Jewish fasts to be observed in this manner - 3 Tishrei, 10 Tevet, 13 Adar and 17 of Tammuz.
Expecting or nursing mothers and those who are ill are expected to observe the fast but with lenience, refraining from meat, luxurious food and hard liquor.
Minors that are old enough to understand, though exempt from fasting, should also be fed only simple foods as a manner of education.
Unlike the two Jewish fast days Yom Kippur and Tisha B'Av, washing and wearing leather are permitted on this day.
Special prayers (vayechal and anenu) are added to the morning and afternoon prayers. Ashkenazim add the latter only in the afternoon service (mincha).
This day is the beginning of the Three Weeks, an annual period of mourning over the destruction of the first and second Temples in Jerusalem.