Hey guys. I have a polyphonic Synthesizer. I am new to Pd. Problem is, I don't know where to put a simple LFO. If I put it in after phasor~ in note.pd, then it doesn't work, plus I have to play three notes in order to hear the fourth. Very strange! My simple LFO is in note.pd.
Thank you!
main.pd adsr.pd note.pd

If you want vibrato you need to continuously add to the input frequency of the note to play
And as midi is control domain not audio you need to take a snapshot of the LFO to convert to control domain
vib.pd

Big thanks @Balwyn. I really appreciate your help. My Synth is almost ready