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I cannot produce a tone from LCS as described in the first roll in exercise (RI)?

LCS is mostly an exercise to get the basic, rough lip setting for RI. Some people really need the lips to squeak to make a sound in RI #1, and other people (including myself) don't need this, or are unable to do it that way. In that case LCS is too closed.The basic setup is right, but you cannot really make a tone out of it. Loosening a bit causes the squeak to become a hiss (rolled in air hiss) and this is also a good way to get your first rolled in tone.

Trio Bert Lochs feat. Lydia van Dam

Nice live video's from a concert in Boxmeer. Filmed and edited by Juul Thielen, sound engineer: Guido Nieuwdorp, mix: Bert Lochs

Van Laar

Bert Lochs plays a Van Laar B8 trumpet and a van Laar B2 flugel. A customized Curry 10.5C trumpet mouthpiece and a self designed piece on his flugelhorn. Both pieces share a sixties (Ratzenberger) Jettone rim.

Reviews

Tracks that stand out in a combination of melancholy, beautiful lines and
modesty. BAQ is a promising debut album that makes you look out
for a next one.

Rolf Polak, Jazz-flits internet magazine