"painstakingly produced" — Collocation dictionary inglés

Automatic translation (We do not guarantee its correctness): skrupulatnie wyprodukować
  1. produce verbo + painstakingly adverbio
    Very loose collocation

    Buchanan was dismayed to find his own trademark sounds, like the wah-wah that he'd painstakingly produced with his hands and his Telecaster, created by electronic pedals.