If you're a die-hard disco diva or a dyed-in-the-wool John Travolta devotee, you're sure to be a Saturday Night Fever fan. We can't get our hands on Travolta, but we've got the next best thing. From tomorrow until June 19, The Lyric Theatre will be transformed into a 1970s Brooklyn disco for the Broadway hit, Saturday Night Fever. Naturally, the production features some of the Bee Gees greatest hits and some energetic dance performances. Tickets, which are going for $295-$695, can be purchased at www.hkticketing.com , or by calling 31288288. If you're a regular Post reader you might have already scored tickets through our City section's giveaway competition. If you missed it, never fear, for CitySeen has another five pairs of tickets for the show's first performance tomorrow. All you have to do to get your hands on them is tell us in 50 words or less what your favourite Bee Gees song is and why. Send entries to firstname.lastname@example.org by 9pm tonight. Winners will be notified tomorrow morning.