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Part consultancy, part thinktank, part social enterprise, Halcyon helps you prepare for and respond to personal, organisational and societal change.

Halcyon's 52:52:52 campaign on Twitter will help you address 52 issues with 52 responses over 52 weeks.

To be a catalyst is the ambition most appropriate for those who see the world as being in constant change, and who, without thinking that they control it, wish to influence its direction - Theodore Zeldin

A Mundane Comedy is Dominic Kelleher's new book, which will be published in early 2020. We will be publishing extracts on this site and across social media during the last quarter of 2019. Please feel free to contact us with any questions about the book.

Mystery

On Miserere Mei

Has any music ever come as close to lifting the veil as Allegri's Miserere Mei? The sound one hears at time 4:48 (ironically the same number as in a much more modern, and in its own way much sadder work of art) in the video below seems to reach as close to the elusive sublime/divine (take your pick) as one could imagine. Little wonder that legend has Mozart "stealing" this music from the Vatican, after hearing it as a boy in the Sistine Chapel and then writing it down from memory.