Really enjoying this right off the bat, I love when the TARDIS is used to just show off the worlds, and this setting is really fun (also music entity is very gender). The use of Synesthesia as a method to communicate with them is really cool.

I do think a little more could've been done like how they did in Echo with the onomatopoeia, but generally I think the story and setting here are a lot stronger (I've moved Echo down to a 6 from a 7).

I love the fact that we're also seeing more different art forms through the 10th doctor's run, it's just really nice to go through them all with an artist as a companion, something I see will continue with the next story.

Overall a strong 7/10