The aim of the current study was to analyze the occurrence and duration of the epenthetic (svarabhakti) vowel in consonant clusters containing the uvular /R/ in French lyric singing. It was of special interest to consider this phenomenon in vocal speech of the worldwide renowned French opera singers. Firstly, because the uvular /R/ has been traditionally considered as an obstacle to the airflow projection and was supposed to be replaced by the alveolar /r/. Secondly, because consonant clusters present a problem for singers in any language, for they interrupt the airflow and hinder a good legato in singing. Rhotic clusters present both challenges combined. Svarabhakti vowel can be helpful in this case, aiming at the simplification of syllable structures in singing. The current study considered various factors, which may have an impact on the occurrence and duration of the svarabhakti vowel: cluster structure (CR or RC), sonority, voicing, manner and place of articulation of the adjacent consonant, musical tempo and neighboring vowel duration. Performances of two distinguished French singers with high voices and with the same repertoire were analyzed. The results of the study showed that in singing of both artists the svarabhakti vowel occurred in all cluster types and in all musical tempi. In RC clusters it was longer than in CR clusters (at the p-level < 0,05). Other correlations between the above-mentioned factors and the svarabhakti frequency and duration occurred to be singer-dependent.