The Organ Concertos Op.4 and Op.7 by George Frideric Handel (1685-1759) were originally composed as musical interludes to be performed during the intervals of the Oratorios. Handel chose to write for the organ, an instrument hitherto relegated to the liturgical service, to emancipate it and have it take on a new character, more brilliant and appealing to the public. From the scores it is clear that these concertos do not have to be played on a large instrument, as they only sporadically require the use of the pedalboard, which therefore made the concertos also performable on the harpsichord. Transcription, the art of transcribing repertoire for a different instrument or ensemble combination, is absolutely an integral part of the boundless organ and keyboard literature dating from the distant Renaissance to the present day. One great example from the organ repertory is composer and organist Clément Loret's (1833-1909) transcription of Handel's Organ Concertos for solo organ. The two composers complement each other - Handel, a great virtuoso and dazzling composer of the Baroque period capable of gripping the most disparate audiences, and Loret, a late Romantic belonging to the great French school of Jacques-Nicolas Lemmens, where the organ is placed centre stage. Loret intervenes in Handel's work whilst maintaining it's spirit. He preserves the dense contrapuntal writing, merging organ and orchestral parts without reserve, and always retaining the brilliance and vivacity that characterise the original in virtuosic projection towards the modern symphonic organ. This all makes for a large sound and an array of significant technical and stylistic difficulties for the performer. The set of Op.4 and Op.7 taken together includes 12 concertos in total, each with it's own character, shape, style and atmosphere. The tonalities used are those that were the most frequent and most in vogue during the Baroque period, except perhaps for the concerto in A major Op.7, which stands out not only for it's tonality, but also for the particular elegance and fluctuation of it's fugue theme.