'Glee' cast perform Whitney Houston's 'How Will I Know' - video
The late musician's track is given an acapella reworking by Mercedes (Amber Riley), Rachel (Lea Michele), Kurt (Chris Colfer) and Santana (Naya Rivera).
The clip is taken from next week's tribute episode 'Dance With Somebody', which also features Houston's songs 'Saving All My Love For You', 'My Love Is Your Love' and 'I Have Nothing'.
A Glee insider has said that the episode will "not be a typical tribute", explaining: "It's using Whitney's music as a way to say goodbye. A way to respectfully say thank you for her music."
Riley covered Houston's famous ballad 'I Will Always Love You' in an episode that coincidentally aired just three days after the music icon's death on February 11.
Glee's tribute to Houston will air Tuesday at 8/7c on Fox in the US and Thursday at 9pm on Sky1 in the UK.
> 'Glee' Amber Riley on Whitney Houston: 'Her acknowledgment was enough'