Written by singer and lead guitarist Daniel Johns and drummer Ben Gillies, it was produced and engineered by Phil McKellar at the national radio station Triple J's studios for SBS-TV's show Nomad, which aired on 16 June 1994.

After the broadcast, Silverchair were signed to the Murmur record label – a Sony Music subsidiary – which subsequently issued the Tomorrow EP.

"Tomorrow" became a breakthrough hit for Silverchair when it reached number one on the ARIA Singles Chart on 30 October 1994 and remained there for six weeks.

[3] In November 2020, the EP recording of "Tomorrow" was inducted into the NFSA (National Film and Sound Archive of Australia).

[12] Early in that year, they recorded demos of "Acid Rain", "Cicada", "Pure Massacre", and "Tomorrow" at Platinum Sound Studios.

[9][14] The competition was conducted by the SBS TV show Nomad and Australian Broadcasting Corporation (ABC) alternative radio station Triple J.

[9][16][17] On 16 September, the Triple J recording of "Tomorrow" was released on a four-track extended play of the same name, which also included the songs "Acid Rain", "Blind", and "Stoned".

[22] In 1995, a re-recorded version of "Tomorrow" (and a new music video) was made for the United States market, becoming the most-played song on US modern rock radio that year.

The original version was directed by Robert Hambling for the SBS-TV show Nomad,[9] which was produced by former Triple J broadcaster Tracee Hutchison.

They described it as "An outstanding exercise in quiet-loud dynamics, it features a wah-soaked guitar solo that showcases Johns' exquisite taste for melodic earworms.

"[38] In April 2022, The Guardian ranked "Tomorrow" at #1 on their "The 25 best Silverchair songs - sorted" list, saying "The EP version is slightly preferable to the one re-recorded for Frogstomp, mostly because it sounds a little rougher around the edges – clearly made by three teenagers who just wanna throw every idea they have into the pot and see how it tastes.

"[39] On 9 December 1995, Silverchair performed the songs "Tomorrow" and "Pure Massacre" on Saturday Night Live, hosted by David Alan Grier.

[42] At the start of the episode the two main characters are singing Boston's "More Than a Feeling", then concluded that the song was stupid and ended by stating how the video fails to disturb them.

[43] The song was also released as downloadable content for the video games Guitar Hero World Tour in 2009,[44] Rock Band in 2010,[45] and Rocksmith 2014 in 2014.

[51] The re-recorded version of "Blind" was included on Silverchair's compilation albums The Best Of: Volume 1 in November 2000 and Rarities 1994–1999 in December 2002.

[52] Live video performances of "Blind" and "Tomorrow" from June 1995 are included on the Frogstomp: 20th Anniversary Deluxe Edition bonus DVD.