Listening is the basic bricks and mortar of a language acquisition. Within my research paradigm, I expected the listening performance in IELTS to have the stronger association with the second language proficiency in overall performance. Based on the results of the study, the correlation coefficients confirmed this prediction. The correlation between audio skill with other language systems – speaking, reading and writing as well as overall IELTS performance is significant. Despite a close relationship between aural/oral skills in nature, the correlation between listening and reading, however, was stronger than listening and speaking skill performance. Writing is the last skill learned by first and second language learners. However, the correlation between listening and writing performance is very close to that of the correlation between listening and speaking. Thus, reading, due to its common comprehension features with listening had the highest correlation score in IELTS. The high correlation of reading with listening is aligned with the cognitive load process in reading comprehension which Weir et al. (2009b) found that there is a high correlation between the construct measured by IELTS and that of academic reading in the target space.