For their 11th anniversary they had a live party that was streamed on Youtube live. Fans were able to call them and request songs for them to sing. During the segment they also hummed a song that will be in their 13th album.
For this event they also decided to dress up as each other and imitate each other! Selina as Ella, Ella as Hebe, and Hebe as Selina!
Here's the link to the live party: http://www.dailymotion.com/video/xtgrro_s-h-e-11-yyyyyyparty_music
It's a must watch!
Here's an interview where they hum the song at the end of the clip: http://www.youtube.com/watch?v=S-YVEtBX6I4&feature=player_embedded
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