I-Jethro Tull yiqembu lesiNgisi elasungulwa ngo-1968. Kusukela ngaleso sikhathi, leli qembu belilokhu licula njalo, kunezinguquko ezimbalwa kakhulu kumalungu alo asungula umculo. Ngawo-70, lalingenye yamaqembu adumile kakhulu emhlabeni.
Ukwakheka kwakhe kokuqala kwakuhlanganisa: u-Ian Anderson (izwi, umtshingo nesigingci se-acoustic), u-Glenn Cornick (ibhesi), uClive Bunker (izigubhu) noMick Abrahams (isiginci sikagesi). Ngokushesha ngemva kwalokho, isigingci sahlukana neqembu, wajoyina uMartin Lancelot Barre ofanayo, okwathi kusukela ngaleso sikhathi (1969) waba isiginci sakhe sokuqala.
Kusukela lapha kuqhubeke, abaculi abaningana abadumile badlula ebhendini ngezinsimbi ezimbalwa, kodwa ngaphandle kokulahlekelwa abayinhloko nabasunguli bebhendi.
UJethro Tull wenza umculo oqanjiwe kakhulu, ehlanganisa ama-blues, abantu baseNgilandi, kanye ne-hard rock, ngomculo we-Baroque kanye ne-Renaissance . Kuqanjiwe kakhulu futhi kuyajabulisa ukuwulalela. Badlala nohlobo lomculo we-acoustic olungenalo ukubekwa ngezigaba okulula. Isici esivelele kakhulu somsindo weqembu yi-flute ka-Ian Anderson, eye yaba ngesinye sezici zabo ezicacile, kanye nomsindo ongacacile wegitare likaMartin Barre. Sekuyiminyaka eminingana besebenzisa abadlali bekhibhodi, benezela umbala oyingqayizivele ezingoma. Basebenzise ne-lute, i-mandolin, kanye ne-recorder lapho izingoma zibabiza. Njengamanje, bafake i-violin edlalwa ngowesifazane osemusha wase-Asia, umlingani ka-Ian Anderson.
http://youtube.com/watch?v=QqZmtq5LhFo