"People's Sunday Meeting," Boston Investigator, 18, 44 (March 7, 1849), 3.
People's Sunday Meeting:—By reference to the advertisement of this Society, it will be seen that Mr. Warren will deliver next Sunday a lecture on Music and Singing. We understand he has a new and original theory on this very pleasing subject, and being also practically acquainted with it, having for some years past been an occasional teacher, we have no doubt of his ability to five an interesting and instructive lecture. We ask for him a crowded Hall.
The position he takes is, that the reason why people do not generally succeed to their satisfaction in their attempts to learn music is not because music is too scientific for the masses, but it is because Music is not scientifically written.