Prosser is a New Zealander but has spent many years living and studying in the UK.
She describes herself as a singer specialising in medieval music and a performance poet, of both her own and others' poetry.
She has published a volume of poems and has a second volume in preparation.
Her performance style is theatrical, highlighting the close connection between spoken and sung words.
Prosser and Decio perform together regularly in programmes of classical piano music and poetry from their home base in Wellington, including the lunchtime concert series.
They also visit schools to perform Sergei Prokofiev's Peter & the Wolf.
The duo select poetry to complement the music and the two are interspersed.
Their Whanganui concert will include piano pieces by Bach, Rachmaninov, Chopin, Haydn, Ravel, Poulenc and Prokofiev.
Prosser will read her own poetry and well-known poems by Edward Lear, John Masefield, Walter de la Mare and Samuel Taylor Coleridge.
There will also be poems by EE Cummings and John Drinkwater.
Tickets are available from the Royal Wanganui Opera House and at the door.
Adults $20, seniors $15, Music Society members $10 and students $5.
Piano & Poetry: Ingrid Prosser and Colin Decio. Sunday, June 30 at 2pm. St Paul's Worship Centre, Cooks St. Adult $20, seniors $15, school student $5, Music Society member $10. Book at Royal Wanganui Opera House, 69 St Hill St, Ph 06 349 0511.