Unimother 27 is an experimental music project (Experimental - Kraut - Psych - Prog rock style) of Piero Ranalli. His musical career begins in 1989 with City Sewer System (garage psych-rock band), they recorded three demo tapes, well accepted by music critics. In 1991 he starts playing as power-trio with INSIDER (Spacedoom-rock), Giuseppe Miccoli: drums; Marco Ranalli: guitar, vocals that came from "City Sewer System" (Piero's brother); Piero Ranalli: bass. Giuseppe leaves Insider after recording the first cd. During the recording of second album "Land of crystals" (1995) was included Eugenio Mucci like singer. For the realization of third cd "Jamming for smiling god" (2000) the line up changes again, Andrea Sestri "Sigly": vocals, Marco Ranalli: guitar, synth, Piero Ranalli: bass, drum machine programming. In the meantime Piero plays the bass with another band, AREKNAMES (Michele Epifani: Hammond organ, synth, guitar, recorder; Mino Vitelli: drums, percussions; Piero Ranalli: bass). On January 2004 they released their first cd (dark - prog rock style). On june 2005 came out the fourth album of Insider "Simple Water drops", with the following line up Eugenio Mucci: vocals, Marco Ranalli: guitar, synth, Gregorio Angelucci: drums, Piero Ranalli: bass. On June 2006 has been released the second cd of Areknamés "Love Hate Round Trip" (more experimental of the first) with Simone Antonini: drums; Stefano Colombi: electric & acoustic guitar; Michele Epifani: Hammond organ, synth, recorder; Piero Ranalli: bass. On July 2007 has played with Areknames at Burg - Herzberg festival of which has been published the live album and after this he has gone away from the band. The first work of Unimother 27 has been released on April 2006 by Pineal Gland Lab. The second album "Escape from the ephemeral mind" has been released on May 2007. "Grin" the third album has been released on June 2008. "Frozen Information" the fourth album has been released on October 2015. On 2016 has been released "Jammin' from the network Vol. I-VII" (only digital version on Bandcamp). "Fiore Spietato" the fifth album has been released on February 2017."AcidoXodica" the sixth album has been released on February 2018. "Chrysalis" the seventh album has been released on May 2019. "Presente Incoerente" the eighth album has been released on February 2021.