Following World War II, Tunde Nightingale's s'o wa mbe style made him one of the first jùjú stars, and he introduced more Westernised pop influences to the genre. During the 1950s, recording technology grew more advanced, and the gangan talking drum, electric guitar and accordion were incorporated into jùjú. Much of this innovation was the work of IK Dairo & the Morning Star Orchestra (later "IK Dairo & the Blue Spots"), which formed in 1957. these performers brought jùjú from the rural poor to the urban cities of Nigeria and beyond. Dairo became perhaps the biggest star of African music by the '60s, recording numerous hit songs that spread his fame to as far away as Japan. In 1963, he became the only African musician ever honoured by receiving membership of the Order of the British Empire, an order of chivalry in the United Kingdom.