01 - Império Da Tijuca 02 - Viradouro 03 - Imperio. Serrano 04 - Estácio 05 - Rocinha 06 - Caprichosos 07 - Padre Miguel 08 - Renascer 09 - Porto Da Pedra 10 - Santa Cruz 11 - Cubango 12 - Curicica 13 - Tuiuti 15 - U. Jacarepaguá 14 - Alegria Zona Suls 16 - Tradição 17 - Sereno 18 - Jacarezinho 19 - Vila Santa Tereza
A complicated question, on some levels.

Imperatriz’ samba enredo has been voted the most popular of the Grupo Especial songs for Rio Carnival by a specially selected panel of judges in O Dia, the Rio de Janeiro newspaper. I agree; nice melody, good lyrics and, crucially, easy to sing.
Imperatriz’s theme for carnival 2010 is ‘Brazil of all the gods', and you can see a preview of their costumes for carnival 2010 here. Imperatriz’s carnavalesco (artistic designer) is Max Lopez. The official Grupo Especial CD is released on 7th December; you can buy it here.