This is actually something you will be seeing on a weekly basis once you start with daily challenges. Every Wednesday is Improv day and you will usually learn a scale and then attempt to solo over a backing track. It’s always the same 3 step process:
1) First you play the scale note by note along with the scale video that you learned earlier, this is just another opportunity to rehearse the sequence of notes
2) Now, with the backing track playing on your device, you play the same scale. You are learning to play something different while the track is playing. It’s kind of soloing because you are doing something different (playing the scale), which is not what you are seeing and hearing.
3) the last thing is to introduce your own phrasing by just playing a few of the notes from the scale, in any order you wish. Tony is encouraging you to also add hammer-ons, pull-offs and bends but you don’t have to. I think that’s there for the more advanced players that opt to do 30 days.