Explanation:
Uriah Heep changed their drummer five times between 1969 and 1980. Drummer changes are not uncommon in bands, especially over a long period of time. This turnover may have been due to various reasons such as creative differences, personal conflicts, or simply the need for a fresh sound. Each new drummer likely brought their own unique style and energy to the band, contributing to Uriah Heep's evolving sound over the years.