Align sibilance, plosives, and note endpoints in BVs to the lead vocal
Problem: backing vocals distract from lead, timing misalignment
Add harmonies via Auto-Tune by pitch-shifting duplicates
Problem: lack of vocal harmonies
Avoid over-processing harmonies with ambient effects
Problem: harmonies overpower the lead vocal
Use a short, subtle reverb on harmony vocals to create cohesion
Problem: harmonies sound disconnected or too dry