Does the subject want to ask: "How many versions of Cool Dog Music 20 17 are there?" Four. Cool dog music v8.7.0 released on May 19, cool dog music v8.6.8 released on March 1, cool dog music v8.6.6 released on February 27th, and cool dog music v8.4.9 released on February 26th. Cool Dog Music is a digital music interactive service provider with innovative technology in China, which is committed to providing perfect solutions for Internet users and the development of digital music industry. Cool Dog Music has made bold attempts in the development of digital music, cooperated with record companies and copyright management agencies to explore development, accumulated music copyright, and strived to promote extensive cross-industry and cross-platform cooperation.