In 2005 Helder saw 37 performances during 11 concerts with 35 bands at 8 venues in 5 locations.

Date   Concert   Venue   Location  
Dec 06, 2005
dEUS
  Setlists
Casa Da Música Porto, Porto, Portugal
Nov 19, 2005
Sigur Rós / Amiina
  Setlists
Coliseu do Porto Porto, Porto, Portugal
Nov 11, 2005
Irmin Schmidt And Kumo Casa Da Música Porto, Porto, Portugal
Aug 15, 2005 –
Aug 18, 2005
Paredes de Coura Festival 2005
Foo Fighters / Arcade Fire / Pixies / The National / Queens of the Stone Age / Kaiser Chiefs / Nick Cave and the Bad Seeds / The Bravery / Death from Above 1979 / wovenhand
  Setlists
Paredes de Coura, Portugal
Jun 20, 2005
LCD Soundsystem Casa Da Música Porto, Porto, Portugal
May 27, 2005 –
May 29, 2005
Super Bock Super Rock 2005
Black Eyed Peas / System of a Down / Moby / Incubus / Marilyn Manson / The Prodigy / New Order / Slayer / The Hives / Audioslave / Mastodon / Iggy & the Stooges / Turbonegro
  Setlists
Lisbon, Lisbon, Portugal
May 20, 2005
Blasted Mechanism Pavilhão Rosa Mota Porto, Porto, Portugal
May 01, 2005 –
May 07, 2005
Clã / Orishas / Blasted Mechanism / Da Weasel

Noites da Queima do Porto 2005

Parque da Cidade Porto, Porto, Portugal
Apr 08, 2005
Da Weasel Pavilhão Multiusos Guimarães, Braga, Portugal
Feb 19, 2005
Wray Gunn / X-Wife

Moda Marginal

Cinema Batalha Porto, Porto, Portugal
Feb 13, 2005
Chemical Brothers Tokyo Bay NK Hall Tokyo, Tokyo, Japan