The first piano concerto composed by Ferdinand Ries in 1806, which is revised later in 1824 as his 6th piano concerto Op.123. According to Allan Badley, reason behind may due to the significant style resemblance to his teacher LvB.
QuoteHis decision to withhold Concerto No.6 from publication at this stage may be an indication that he himself recognized that the work was too obviously Beethovenian in character. By the time the work finally appeared in 1824 his own style was so well-developed and recognized that the publication of an early work would not have unduly harmed his reputation.
1. Allegro con spirito
Having listened, I am not surprised that such a derivative opening movement was "left in the shed".