Both songs have been described as amongst the most difficult songs in the series' history.

The song is considered one of the most difficult songs in the series to perform on drums, due to its fast tempo.

It was the most difficult song I've written.

I used to laugh at myself because that's a particularly difficult song to pull off.

These technical players usually play the most difficult songs on the highest difficulty levels in an attempt to perfect their scores.

While songs can be sight read without having performed them before, players usually practice to master more difficult songs and settings.

While songs can be sight read, players usually practice to master more difficult songs and settings.

In the game, all three songs are classified as very difficult songs to play, requiring much skill with the series.

For us to answer, indeed, for it is a difficult song to forget.

It is on the hardest level, the most difficult song.