Setbreak Daily Dose - Dead Phish provides access to curated content performed on todays date (day/month) in previous years. The list is maintained by setbreak.com and integrates content feeds from archive.orgs Live Music Archive as well as other sources.
Jamband fans will find this app especially attractive. In addition to concerts by The Grateful Dead, artists include Phish, Phil Lesh & Friends, Ratdog, The Other Ones, etc.