Hi. Locomotives and multiple units like class 57 66 81 166 165 321 and 456 on the DLS use wrong horn sounds from other locomotives and multiple units. With any reskins new releases or reworked rolling stock that are going to the DLS I highly recommend searching the classes number or multiple units number on the DLS and finding the current horn sound of the locomotive or multiple unit. With searching the DLS type in class and the number of the loco or multiple unit and you will find the horn sound. Just a suggestion.