Here's what wikipedia has to say about the ghazal:
The ghazal (Arabic/Persian/Urdu: غزل; Hindi: ग़ज़ल; Punjabi: ਗ਼ਜ਼ਲ, غزل; Turkish: gazel) is a poetic form consisting of rhyming couplets and a refrain. Each line must share the same meter. A ghazal may be understood as a poetic expression of both the pain of loss or separation and the beauty of love in spite of that pain. The form is ancient, originating in 6th century pre-Islamic Arabic verse. It is derived from the Arabian panegyric qasida. The structural requirements of the ghazal are similar in stringency to those of the Petrarcan sonnet. In its style and content it is a genre which has proved capable of an extraordinary variety of expression around its central themes of love and separation. It is one of the principal poetic forms the Indo-Perso-Arabic civilization offered to the eastern Islamic world.Ghulam Ali is a ghazal singer from Pakistan, famous across the Indian sub-continent and comfortable singing in Urdu, Punjabi and Nepali. The music on this album is completely mesmerizing, and Ali's voice soars across these songs, beautiful and melancholy.
The ghazal spread into South Asia in the 12th century under the influence of the new Islamic Sultanate courts and Sufi mystics. Although the ghazal is most prominently a form of Persian poetry and Urdu poetry, today, it is found in the poetry of many languages.
Ghazals were written by the Persian mystics and poets Jalal al-Din Muhammad Rumi (13th century) and Hafez (14th century), the Azeri poet Fuzuli (16th century), as well as Mirza Ghalib (1797–1869) and Muhammad Iqbal (1877–1938), who both wrote ghazals in Persian and Urdu.
...it is not possible to get a full understanding of ghazal poetry without at least being familiar with some concepts of Sufism. All the major historical post-Islamic ghazal poets were either avowed Sufis themselves (like Rumi or Hafiz), or were sympathizers with Sufi ideas. Most ghazals can be viewed in a spiritual context, with the Beloved being a metaphor for God, or the poet's spiritual master. It is the intense Divine Love of sufism that serves as a model for all the forms of love found in ghazal poetry.
Most ghazal scholars today recognize that some ghazal couplets are exclusively about Divine Love (ishq-e-haqiqi), others are about "earthly love" (ishq-e-majazi), but many of them can be interpreted in either context.
Traditionally invoking melancholy, love, longing, and metaphysical questions, ghazals are often sung by Iranian, Afghan, Pakistani, and Indian musicians. The form has roots in seventh-century Arabia, and gained prominence in the thirteenth- and fourteenth-century thanks to such Persian poets as Rumi and Hafiz. In the eighteenth-century, the ghazal was used by poets writing in Urdu, a mix of the medieval languages of Northern India, including Persian. Among these poets, Ghalib is the recognized master.
01 Dil Mein ik Leher
02 Koi Sumihai Ye Kiya
03 Ghaam Nahin
04 Raseeley Toray Nain
05 Maine Lakhoon
06 Dost Bankar
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