Phonology in second/foreign (L2/FL) listening has not received much attention from scholars and teachers. This article reports on a mixed-methods study which set out to fill this gap by exploring the effectiveness of explicit instruction in phonology and the use of songs to enhance English-as-a-L2 (ESL) learners' listening abilities in Hong Kong. ESL learners (n = 92) aged 17-20 participated in a three-month experiment. Data from pre-, post-listening tests and semi-structured interviews were collated. The findings demonstrated the efficacy of L2 phonology instruction in improving learners' L2 listening. More remarkably, the positive effect was augmented when the instruction was coupled with phonological analyses of song lyrics. However, using songs alone for gap-filling exercises (as is commonplace in L2 classrooms) was not found to be effective. [Copyright of International Journal of Applied Linguistics is the property of John Wiley & Sons, Ltd.]