I think the A3 whistle sounds amazing at speed... I have a recording from 1959 at Ordsall cossings at Retford on the ECML on a Sunday morn ... the kids can be heard in the park, Ordsall church chiming bells are playing their tune, birds twittering, dogs barking etc... next minute shattered by A3 'Blink Bonny' doing 80+ with whistle wide open for a good half mile thru the station!!!! Pure Gold....
Aaaaaaaaaaaaaaaaaaagh Creeper!!!!!