More than a quarter of a million people visited Wexford library during its first year of operation.
The Mallin Street library which opened on November 17, 2012, organised a surprise 'flash mob' performance to celebrate its first anniversary.
The silence of the building was broken when choirs erupted into singing last Thursday.
Members of Bride Street Choir, Rowe Street Choir, the Festival Singers, Valda, Vocare and Enniscorthy Support Singers crept into the venue and positioned themselves in strategic locations including on the stairs and balcony.
Library visitors going about their business were treated to impromptu singing and music performances by the choirs and Ger Lawlor, accompanied by Anthony Nolan on trumpet as well as young members of Music for Wexford.
The off-guard event was organised by library manager Sinead O' Gorman with the assistance of Eanna McKenna, Betty O' Brien and Anne Logan from Music for Wexford.
Advance details were even kept secret from library staff who were only told there was a surprise in store.
The new library has been a hugely popular resource since it opened a year ago.
During the past year, 275,000 items were checked out, including books and DVD's.
There were 42,000 sessions on the internet and 6,000 new people joined, bringing the current library membership to more than 20,000.