Katta Ashula (a song performed with a plate) is specific to the Ferghana Valley of Uzbekistan. Usually, it is performed a cappella by two to five singers of the same vocal range who use a plate or tray to project their voices in different ways. In most cases, Katta Ashula is performed by singers with a high-pitched, wide-ranging voice, and these are some of the distinguishing features of the complex performance style. Katta Ashula developed from basic traditional events in history, from labour songs, and from different styles of ghazal verses. Usually, Katta Ashula is performed in big gatherings, festivities, and party celebrations. Katta Ashula songs were performed professionally and further developed by famous Khofizes such as Erkaqori Karimov, Turdiali Ergashev, Matbuva Sattorov, Jo'rakhon Sultonov, Mamurjon Uzoqov, Boltaboy Rajabov, Orif Alimakhsumov, Fattohkhon Mamadaliev, Jo' rakhon Yusupov, and Khamroqulqory To'raqulov. Today, Katta Ashula is masterfully performed by experienced singers with the highest skill, such as Khalima Nosirova, Munojot Yo'lchieva, Ismoil and Isroil Vakhobovs, and Mahmud Tojiboev.