174 Hz 是在 Puleo 最初六音之下所增添的兩個音之一，讓 Solfeggio 音組拓展為更完整的音階。傳統將它視為一種根基：一個令人沉靜、紮根安定的音。 它常作為低沉的基底音，為一段練習定錨。這層意涵，源自延伸版 Solfeggio 的傳承。 隨著 Solfeggio 音組流傳開來，人們在原本六音的下方再置入兩個音，使整段序列圓滿為更完整的九音音階。它們承載著與其餘各音相同的數字印記，並在同一傳統中被描述為紮根、奠基的音高，而非脈輪階梯上的中心。 Independent of any tradition, controlled clinical evidence that a specific frequency produces a specific health effect is limited and mixed. Auriviel presents these tunings as music and contemplative practice. This page is for general information and relaxation. Auriviel's frequency music is not medical advice, diagnosis, or treatment, and no health outcome is claimed. If you have a medical concern, please consult a qualified professional.