Music videos became an important promotional tool for artists in the 1950s-1980s as the music industry shifted from radio to television. Only major label artists could initially afford professional music videos. In the late 1970s, independent labels also began producing music videos, allowing their artists to reach wider audiences. Many independent labels later signed distribution deals with majors, growing their businesses. Now, the lines between independent and mainstream artists are blurred as new promotion methods and revenue streams have emerged through technology and different business models.