Pronunciation is a common topic of interest in ELT but teachers may be unsure of what features of pronunciation to prioritise, especially in multilingual classes. While research calls for explicit pronunciation instruction that focuses on improving intelligibility and comprehensibility, implementation is still a challenge. This article presents pedagogical applications following the new CEFR descriptors for phonological control. We discuss a 40-hour pronunciation course for international ESL students from diverse L1s in a Canadian university. Pronunciation instruction was delivered through controlled speech practice and drama tasks for practice of extemporaneous speech. Students completed weekly audio recordings, received extensive feedback and completed self-reflections. Moreover, the teacher assessed pre- and post-course recordings to identify change over time. Results show that students developed awareness of pronunciation features that can contribute to more intelligible and comprehensible speech and that a listener's lack of familiarity with speech diversity can play a role in how speech is perceived.