By the mid-1980s, the result was kalindula music. Bands included the Masasu Band, Serenje Kalindula and Junior Mulemena Boys. Amayenge is considered one of the best kalindula bands of the past twenty years. Another top artist is Brian Chilala who, together with his band Ngoma Zasu, continues in the electric kalindula tradition. An annual concert of traditional bands (not just kalindula) was recently begun by the Chikuni Radio station in Chikuni in the Southern Province. Two of the most popular bands from that festival are Green Mamba and Mashombe Blue Jeans. In addition, artists such as Alfred Chisala Kalusha Jr. based their compositions on "Imfukutu" - Bemba folk music. In the 1990s, economic problems caused the collapse of the Zambian music industry. Unfettered by rules promoting Zambian music, the airwaves were covered with imported ragga and reggae from Jamaica and hip hop and R&B from the United States. The most successful record label currently operating in Zambia is Romaside entertainment, Sling beats, Blaza, G-sounds, Alpha Entertainment and X.Y.Z Entertainment. Their stable of artists includes J.K., Slap Dee, Macky 2, Chef 187, joe chibangu, Jay Brown (Son of the most High), hamoba, Ty2, Bobby East, Zone fam and Jay Roxer, J.o.b, Stevo, Muzo aka Alfonso, Petersen, Izreal, Corta Nac City, Danny, Shatel, Black Muntu, pilato, Mampi, Tommy Dee, South African based chilu lemba and the Algerian based rapper T.I.D.Y and not forgetting the Pylot African Sun. Sound clips of each of these groups can be heard at their website (see below). The Zambian entertainment industry recognizes popular musicians such as these at its annual Ngoma Awards. The Ngoma Awards amount to a Zambian version of the all-Africa Kora Awards. At the moment K'Millian, Macky 2, Slap dee, Chef 187 are the very popular artists. A unique hybrid form of Zambian music is found in the so-called "banjo" tradition. The Zambian "banjo" (pronounced 'bahn-jo') is essentially a homemade guitar. A wide variety of such instruments can be found in different sizes and with varying numbers of strings. Most are played using a two or three finger picking style and the tuning of each instrument is unique to that instrument. The body is made in various shapes from wood or sometimes tin cans, and the strings or 'wires' often come from discarded radial tires. Zambian banjos are used in kalindula bands throughout Zambia. Christian music Popular influences can also be heard in the