Miley Cyrus was way too smart to be waiting around ... "No shade, but I've been doing this for 20 years, and this is my first time actually being taken seriously at the Grammys?" ...

Turning points are nothing new for Miley Cyrus, who reinvents herself ... writing to a track," explains Daniel, who says Cyrus had amassed about 20 songs for the album by the time he began working ...