How does this deck work? Thanks for asking.
Seletrice searches any Vaalmonica. Dimmono is a Light Fiend if you want to go Fiendsmith on that route. You should keep at least one Vaalmonica in the Pendulum zone for Resonance counters. If you are going first, I'd reccomend Link summoning into Zebufera. For going second, Duralume can give you some free destructions equal to your resonance counters.
For Solfachord, you are mainly going to be providing support for your Vaalmonica and Fiendsmiths while working your way up to Accesscode Talker. Ideally, you set up your standard Solfachord combos (Primoa + any Solfachord or Happiness + any Solfachord) , go into Beyond the Pendulum, use her effect to destroy two cards your opponent controls if you can, go Exceed the Pendulum, use her effect to summon a Pendulum monster from your hand, then go into a 5300 atk Accesscode Talker with 2 destructions available thanks to Beyond and Exceed.
Fiendsmith is simple. You get Tract, grab, toss, then summon Lurrie. Lurrie goes into Requiem, Requiem summons Lacrima, Lacrima sends Engraver, Link into Sequence, Sequence gets you a copy of Desirae with two negates or Fusion Lacrima that can get you Big Ceasar.
I personally like the deck. It has so many ways to play around interruptions. Do pray to get Called by the Grave in every hand in case someone decides to Droll. Otherwise, good luck and have fun.