Ilosaarirock (album)

{{Use dmy dates|date=October 2022}}

{{Use British English|date=December 2012}}

{{Infobox album

| name = Ilosaarirock

| type = live

| artist = Porcupine Tree

| cover = PT Ilosaarirock.jpg

| alt =

| released = March 2009

| recorded = 14 July 2007

| venue = Ilosaarirock Festival (Joensuu)

| studio =

| genre = Progressive rock, progressive metal

| length = 73:42

| label = Transmission

| producer =

| prev_title = We Lost the Skyline

| prev_year = 2008

| next_title = Atlanta

| next_year = 2010

}}

Ilosaarirock (also known as Transmission 10.1) is a live album by British progressive rock band Porcupine Tree, released in March 2009. It was sent out only to members of the "Residents of a Blank Planet" ticketing club and is not commercially available.{{cite web|title=ROABP CD on the way |url=http://www.porcupinetree.com/news.cfm#1616 |access-date=2009-03-31 |url-status=dead |archive-url=https://web.archive.org/web/20120117180227/http://www.porcupinetree.com/news.cfm |archive-date=17 January 2012 }} It was recorded at the Ilosaarirock Festival in Finland on 14 July 2007, and is considered by the band to be one of the best concerts from the "Tour of a Blank Planet". It includes the band's complete performance remixed from the multitrack recording made by national Finnish radio. Although it contains a few familiar favorites, most of the concert consists of tracks from Fear of a Blank Planet. This was the first time that live versions of the Fear of a Blank Planet songs have been officially released. Due to a fault with the mastering on the first manufacturing run, a corrected replacement CD was also included inside the package.