There is a temporary (from 3rd March to10th May 2015) exhibition in Royal Leamington Spa Art Gallery and Museum "A Leamington Musical Meteor: William Denis Browne" which is both poignant and interesting. Sheet music and correspondence are displayed - though the sheet music are secular songs and not Browne in A is not present. Photos illustrate Browne's short life: as a schoolboy in Leamington and at Rugby School, as Organ Scholar at Clare College, Cambridge (though the photo is of the organ in the Queens' College.....), Gallipoli and his close friendship with famous poets. There is also music to listen to via headphones and it is easy to hear why he was held in high esteem as a composer by his contemporaries. Perhaps not worth a long journey, but certainly of interest to those within reasonable distance.
Connected is the Gallilopi Music Memorial 2015 with various musical events featuring Browne's music over the year, including a concerts at Kings College on the 26th April, two events on the date of Browne's death the 4th June - a concert at St Martin-in-the -Fields and Evensong at Clare which I imagine will include the Mag and Nunc. Other events and more information at: http://www.gallipoli-music.co.uk/