Macao English (ME) is an important medium of communication permeating the communities, among which popular music in Cantonese (Cantopop) is one where Englishization via Cantonese-English code-switching is seen as a norm. Under the prevalence of World Englishes (WE), frameworks for analysing code-switching in pop culture were launched for better theoretical explanation to the phenomenon (e.g., Chan, 2009; Li, 2002; Lin, 2009). Despite the established effort of previous studies about Englishization in languages under various contexts, Cantopop is still in its infancy, and rarely are data gathered in Macao context. In view of this, a mixed-methods approach was adopted with analysis of 15 award-winning songs of a local music awards in the recent five years, together with interpretation obtained from surveys, semi-structured interviews and a focus-group interview with members of the music circle and the general public. The result indicated that English in Macao Cantopop is most often perceived to carry the function of aesthetic effects, expedience, conveying thematic meanings, avoiding embarrassment, and emphasis of emotions. Moreover, different positions and formats of code-switching between lyrics can bring about different pragmatic effects. This research offers a more comprehensive picture of Cantonese-English code-switching in Macao Cantopop with different aspects observed and details given.