In the 1970s, electronic music began to have a significant influence on popular music, with the adoption of polyphonic synthesizers, electronic drums, drum machines and turntables, through the emergence of genres such as disco, krautrock, new wave, synth-pop, hip hop and EDM. In the 1980s, electronic music became more dominant in popular music, with a greater reliance on synthesizers and the adoption of programmable drum machines such as the Roland TR-808 and bass synthesizers such as the TB-303. In the early 1980s, digital technologies for synthesizers including digital synthesizers such as the Yamaha DX7 became popular and a group of musicians and music merchants developed the Musical Instrument Digital Interface (MIDI).