IT is always great to share the excitement that surrounds a ''big'' project. Michael Tumelty's article, The RSNO is the ace that could bring to Scotland a studio for recording film soundtracks (September 27), is just the kind of thinking that makes things possible. Initially one wonders, is there a large enough market? However, this is quickly overturned by the excitement of all the acoustic players, jazz, folk, Scottish as well as orchestral that could not only record there but play live. An un-plugged studio. Twenty-four hours a day non-stop radio and late-night television.

This is surely an opportunity that would also boost the film studios' production profile. Instead of waiting six months for the big film gala first night there would be a constant appraisal of what was happening, with on-location ''star'' interviews broadcast from the radio and television independent stations. Since what these people are looking for are ''essentially sound-proof boxes'' why are we looking at new-build corrugated-iron sheds?

Is the Granary Building and the adjoining brownfield site at Partick not the ideal solution? With no need to build the fixed bridge to the South Side, that cost could be included in the appraisal. The Granary Buildings are also large enough to house film studios, prop, costume and film storage with office and editing facilities.

Niall Barker,

5 Grosvenor Crescent, Glasgow.

September 29.