Here is the clarification for the reason why music is permissible or rejected, in the light of fatwa issued by Sheikh Yusuf Al-Qaradawi:
“The whole issue of singing is controversial, whether it is with musical accompaniment or not. Some issues succeeded to gain the Muslim scholars’ agreement, while others failed. All scholars have unanimous view on the prohibition of all forms of singing and music that incites debauchery, indecency, or sin. As for musical instruments, given the weakness of the evidence indicating that they are forbidden, the rule to be applied here is the one states that all things are originally deemed permissible as long as there is no Shari`ah text that prohibits them.

Singing is no more than melodious words; if these are good, singing is considered good; but if they are bad, such singing is deemed bad. Talk that contains forbidden content is prohibited. What if that talk is accompanied with rhythm and melody?

Scholars agree on the permissibility of singing without instrumental accompaniment and where the content is not prohibited. This sort of singing is allowed only in certain occasions such as: weddings, feasts, welcoming a traveler, and the like. This is based on the hadith of the Prophet (peace and blessing be upon him) that states: “He (peace and blessings be upon him) asked, ‘Have you given the girl (i.e., the bride) anything as a present?’ They (the attendants) replied, ‘Yes.’ He asked, ‘Did you send a singer along with her?’ ‘No’, said `A’ishah. The Prophet (peace and blessings be upon him) then said, ‘The Ansar are a people who love poetry. You should have sent along someone who would sing: Here we come, to you we come, greet us as we greet you.'” In this case, we can say that a woman can sing only in front of women and her non-marriageable male kin.

In the subject of musical instruments, scholars disagree on the matter. Some of them permit all sorts of singing, be it accompanied with musical instruments or not, and even consider it recommended. A second group of scholars permit singing only when is not accompanied with a musical instrument. A third group declare it to be prohibited whether it be accompanied with a musical instrument or not; they even consider it as a major sin. In supporting their view, they cite the hadith narrated by Imam Al-Bukhari on the authority of Abu Malik or Abu `Amir Al-Ash`ari (doubt from the sub-narrator) that the Prophet (peace and blessings be upon him) said, ‘From among my followers there will be some people who will consider illegal sexual intercourse, the wearing of silk (clothes), the drinking of alcoholic drinks and the use of musical instruments, as lawful.’ Although this hadith is in Sahih Al-Bukhari, its chain of transmission is not connected to Prophet Muhammad (peace and blessings be upon him) and this invalidates its authenticity. Ibn Hazm rejects it for that very reason. Moreover, the sub-narrator, Hisham Ibn `Ammar is declared ‘weak’ by many scholars of the Science of Hadith Methodology.

Besides, this hadith does not clearly prohibit the use of musical instruments, for the phrase ‘consider as lawful,’ according to Ibn Al-`Arabi, has two distinct meanings:

First: Such people think all these (the things mentioned) are lawful.
Second: They exceed the proper limits that should be observed in using these instruments. If the first meaning is intended, such people would be thus disbelievers.

In fact, the hadith in hand dispraises the manners of a group of people who indulge themselves in luxuries, drinking alcohol and listening to music. Therefore, Ibn Majah narrates this hadith from Abu Malik Al-Ash`ari in the following wording: “From among my followers there will be some people who will drink wine, giving it other names while they listen to musical instruments and the singing of female singers; Allah the Almighty will make the earth swallow them and will turn them into monkeys and pigs.” (Reported by Ibn Hibban in his Sahih)

Conclusion on Permissibility of Musical Instruments
In the light of the above, it is clear that the religious texts that stand as a basis for those who maintain that singing is haram are either ambiguous or inauthentic. None of the hadiths attributed to Prophet Muhammad (peace and blessings be upon him) is valid as evidence on the judgment of prohibition. Moreover, all these hadiths are declared ‘weak’ by the followers of Ibn Hazm, Malik, Ibn Hanbal, and Ash-Shafi`i.

In his book, Al-Ahkam, Al-Qadi Abu Bakr Ibn Al-`Arabi says, “None of the hadiths maintaining that singing is prohibited are considered authentic (by the scholars of the Science of Hadith Methodology).” The same view is maintained by Al-Ghazali and Ibn An-Nahwi in Al-`Umdah. Ibn Tahir says, “Not even a single letter from all these Hadiths was proved to be authentic.”
Ibn Hazm says, “All the hadiths narrated in this respect were invented and falsified.”