Oru del igbodu (often called oru seco) is the sequence of batá rhythms performed without vocals, traditionally inside the sacred room (igbodu) during Santería/Lukumí ceremonies.
It is not a “general cycle” but rather a codified sequence of toques (rhythms) played on the three consecrated batá drums (iyá, itótele, okónkolo).
The purpose is to salute and invoke specific Orishas one by one through their associated rhythms.
After the oru seco, the ceremony usually transitions into oru cantado, where singers join and chants to the Orishas are added.