Misolrela is a Solresol community created by Garrison Osteen in 2011. It is a Google Group created for "reviving the language through the assimilation of as many interested people as possible and by making information more easily available and standardized". Misolrela is best known for hosting Garrison's efforts on his English translation of several Solresol dictionaries. The discussions leading up to the creation of Sidosi also took place in Misolrela.
The initial idea for Misolrela came after the posting of the PDF of Langue musicale universelle on the Solresol Facebook group in 2010. A member of the Facebook group was said to be working on an English-translation spreadsheet of the dictionary. However, a year later, no progress had been posted, so Garrison inquired if work was still being done on it. That member replied, saying that they gave up, and encouraging Garrison to continue his effort. He also stated, "Solresol really needs its own site/forums, instead of being a homeless language on the net".
On June 15, 2011, Misolrela was created with its first post, a link to Garrison's in-progress spreadsheet. Then, on August 1, Garrison posted a link to Misolrela in the Solresol Facebook group, sparking an increase in activity, including several linguistic discussions about Solresol.
A week after the post on Facebook, Dan Parson posted an idea for a Solresol translator, which grew to include a list of Solresol resources. After multiple posts suggesting the idea of a hosted forum system, Dan set up a forum system and created Sidosi, essentially the successor to Misolrela.