So far what I've found is the best song to grind the dancers out is "Firday". On easy I got a streak of 77 phrases. This gave me 77 dancers. So there it is. You need to sing songs with alot of pharses. I ran a test and miss a note in the middle of the song and it still gave me 76 on "Friday". So if you want, you can let the game do the work for you. Trust me it works. It's getting me anywhere between 70 and 77 of the pharases. The song is 3:22 mins long. My final playing time was 8 hours & 55 mins. Total songs played 159.