The object of analysis are handwritten musical fragments, previously superficially examined, which Fryderyk Chopin wrote on the last page of the manuscript of 'Trio in G minor' Op. 8 [ref. no. Tic: M/1] at the turn of 1829/1830. The author rejects Krystyna Kobylanska's suggestion that 'this is a draft autograph of piano part fragments' [Kobylanska 1977: catalogue no. 80]. The purpose of the analysis is first of all to establish the origin of these dozen-odd short fragments, which the author links to some of Chopin's composition projects, with which he was preoccupied shortly after he graduated from Warsaw University's Main School of Music, having studied under Józef Elsner. Some of the 'certain' fragments by Chopin from this source undoubtedly relate to 'Piano Concerto in F minor' Op. 21 [Kobylanska 1977: catalogue no. 255]. With regard to others, less obvious, the author discusses the hypotheses that would link these fragments with other last pieces written by Chopin in Warsaw, in particular with 'Waltz in E major' WN 18, 'Nocturne in B flat minor' Op. 9 No. 1 and with a plan to compose an etude in C major, which the composer abandoned.