Last time I went to a KTV, I was with my wife (only girlfriend then) and her cousins and sister. It was near Zhongxiao Dunhua MRT station. After thinking a lot, I ended up singing some Frank Sinatra songs, but there weren't many english songs (just a couple of cheesy pop ones, barely any rock songs). Almost everything in the list was in Mandarin. I would have liked to have more songs to choose from.
(Truth is, even when I really like to sing, I don't encourage my wife to go to KTV, because she is REALLY tone-deaf and her singing is awful... even her family says so, and that's why they don't encourage her, either)

But I have to say... she really tries, and she likes to... sadly, she can't tune. I don't even know how she managed to play the piano when she was younger...