If you are already reading music and just need to develop and accelerate your skills, then this level is for you. For the advanced level, you should know all key signatures, all scale degrees of both major and minor scales and be able to sing any interval in either direction.
What makes this program successful is working with the practice videos and practice audios in the Practice Exercises links as well as the Putting It All Together section.
Although not required or needed to access this program, if you would like to have a copy of the sightsinging book, you may get a hardback or digital copy at the following link. https://www.amazon.com/s?k=ASIN%3A+B08BVWTBZK&i=stripbooks&ref=nb_sb_noss
So let’s get started. To open, click on the first video below. Best of luck!!