Sigmeleza

1983
The 1984 coverage was cancelled due to issues between Rede Sigma and the Government of Rio de Sineiro, leading to that year's broadcasting rights being held exclusively by Rede Megahertz.

2019-2022
The 2021 coverage was cancelled due to the ongoing coronavirus outbreak, which forced most cities and states to cancel their Carnival celebrations. This marked the first cancellation since 1984.

2022-present
In 2022, Sigmeleza-branded on-air coverage will be making its return after a one-year hiatus which was caused by the coronavirus outbreak.