Calvin, Don't Jump!

{{refimprove|date=October 2021}}

{{Infobox musical artist

| name = Calvin, Don't Jump!

| image =

| caption =

| origin =

| genre = Folk, psychedelic, indie

| years_active = 1999-present

| label = Happy Happy Birthday to Me, Perhaps Transparent, Norman, Royal Rhino Flying

| associated_acts =

| current_members =

• J. Kirk Pleasant
• Nathan Matthews
• Lee-Ann Sheel
• Shinobu Hata

| past_members =

}}

Calvin, Don't Jump! started as the solo recording project of J. Kirk Pleasant, a musician with extensive connections to the Elephant 6 Collective. Before moving to Vancouver, British Columbia, Canada, he contributed to releases from bands like the Olivia Tremor Control,{{cite web |title=Olivia Tremor Control Vs. Black Swan Network |url=https://www.amoeba.com/olivia-tremor-control-vs-black-swan-network-ep-12-the-olivia-tremor-control/albums/1027589/ |website=amoeba.com |publisher=Amoeba Music |access-date=2021-09-21}} Black Swan Network, and Pipes You See, Pipes You Don't. His own albums have featured contributions from musicians like Scott Spillane (Neutral Milk Hotel, the Gerbils), Jeremy Barnes (Neutral Milk Hotel, A Hawk and a Hacksaw), John D'Azzo (the Gerbils), as well as Peter Erchick, Eric Harris, and John Fernandes (all of the Olivia Tremor Control).

Early in 2007, Pleasant announced that what had begun as a solo project would expand into a four-piece band, geared towards a poppier, more guitar driven sound. The band featured Pleasant (vocals and guitar), Nathan Matthews (bass), Lee-Ann Sheel (drums), and Shinobu Hata (keyboards).

Calvin, Don't Jump! released two full-length albums, as well as four 7-inch singles, a CDR of live recordings, and a cassette EP: Notes from Undersound. Pleasant's album Conscious of Conscience (2006) was his first true solo full-length album, drawing on assistance from no outside collaborators.

The band performed three concerts in 2010 and 2011{{cite web |title="Calvin, don't jump!" - The Pleasant Matthews |url=https://www.reverbnation.com/calvindontjump |website=reverbnation.com |publisher=Reverb Nation |access-date=2021-09-21}} but appears to have broken up after that; its last social media post was in 2015.{{cite web |title=Calvin, don't jump! on Facebook |url=https://www.facebook.com/Calvin-dont-jump-159069100795877 |website=facebook.com |publisher=Facebook |access-date=2021-09-21}}