In Sudden Walks is the second studio album from Chilean progressive-rock band Aisles.

César Inca of Progarchives stated,"“In Sudden Walks" may have been one of the 5 most accomplished neo-prog albums of 2009.

It is symphonic, melodic, ethnic, emotional, well performed, well-engineered and recorded, beautifully sung, and very fresh and new feeling”.

[1] Gibraltar Encyclopedia of Progressive Rock also gave the album a positive review stating,.“If I had to sum up In Sudden Walks in a single word, it would have to be "beautiful".

[its] perfect, pristine and inventive production that sometimes makes me think I'm listening to an Alan Parsons Project album.