 27 in G major (Hoboken I/27) was probably written before March 19, 1761, while he was employed by Count Morzin.Its chronological position was assigned by Eusebius Mandyczewski in 1907.Although later adopted by Hoboken, Robbins Landon has subsequently revised the work's likely chronological position  and now believes that the symphony is one of Haydn's earliest, written at roughly the same time as symphonies nos.