Immortal Memory is an album by Dead Can Dance member Lisa Gerrard and Irish classical composer Patrick Cassidy, released in 2004.

It was Gerrard's first studio release since 1998's Duality with Pieter Bourke.

Gerrard first met Cassidy in 2000 in Los Angeles (where he lives), when she came to work on the Gladiator soundtrack, and they planned to work together one day.

[5] When they eventually found a shared two-month break, they joined at Gerrard's Australian studio for this record.

[6] The W. B. Yeats poem "Sailing to Byzantium" inspired the track of the same name.