Here's your regulation.
DIVISION 2. - NOISE Sec. 50-121. - General prohibition. Any unreasonably loud, disturbing, unnecessary noise which causes material distress, discomfort, or injury to persons of ordinary sensibilities in the immediate vicinity thereof is hereby declared to be a nuisance and, as such, is liable to be abated, is hereby prohibited, and the person guilty of causing, permitting, or suering them or any of them upon any premises or upon any building occupied or controlled by him or her or in any street, alley, sidewalk, or gutter immediately adjacent to such premises shall, upon conviction, be ned as provided in section 1-14. Any noise of such character, intensity, and continued duration which substantially interferes with the comfortable enjoyment of private homes by persons of ordinary sensibilities is hereby declared to be a nuisance and, as such, is liable to be abated, is hereby prohibited, and the person guilty of causing, permitting, or suering same upon any premises or in or on any building occupied or controlled by him or her or in any street, alley, sidewalk, or gutter immediately adjacent to such premises shall, upon conviction, be ned as provided in section 1-14. (Code 1975, 17-20; Code 1988, 11-46) Sec. 50-122. - Enumeration. The following acts, among others, are declared to be noise nuisances in violation of this division, but such enumeration shall not be deemed to be exclusive: Musical instruments. The playing of any radio, record player, or other musical instrument in such manner or with such volume as to disturb the quiet, comfort or repose of persons of ordinary sensibilities in any dwelling, hotel, or other type of abode. Loudspeakers and ampliers. The use of any stationary loudspeaker or amplier in such manner or with such volume that it disturbs persons of ordinary sensibilities in the immediate vicinity thereof; or The operation of such loudspeaker or amplier at any time on Sunday; provided, however, upon application by the user of such devices, the city council or his or her designee may make special exemption or exception to this clause for such time or times as the council, city manager or his or her designee feels will serve the public welfare, as provided in this article.
Construction work. The erection, including excavation, demolition, alteration, or repair work on any building other than between the hours 7:00 a.m. and 7:00 p.m. on weekdays and Saturdays, except in case of urgent necessity in the interest of public safety and convenience, and then only by permit from the city manager or his or her designee, which permit may be renewed during the time the emergency exists. "
https://www.nonoise.org/lawlib/cities/ordinances/Bryan,%20Texas.pdfSounds like you have a case to request the sound lowered. The GC may plead the 7am to 7pm stipulation?
Is it going to be of such a volume close by for any length of time?
I am in the new build subdivisions two to three times a week most weeks and in most instances there is no need for the music to be as loud as it is.