There are multiple artists called Lydia: 1. a two-piece indie rock band, 2. a Spanish female singer, 3. a Korean female singer.
These are photos from concerts where Lydia played, so they may be of other bands that played the concert as well.
The Dear Hunter / Lydia / You Me And Everyone We Know / Eye Alaska Aug 21, 2008 Allston, Massachusetts, United States Uploaded by Treyj1234
Saves The Day / Armor for Sleep / Set Your Goals / Metro Station / Lydia May 1, 2008 Philadelphia, Pennsylvania, United States Uploaded by Regular Tara