dissonances

"Let me introduce you to my friends."

"The child's loud, off-key singing was discordant with the rest of the choir's performance. "

"The combination of soft music and warm lighting created a relaxing atmosphere in the living room. "

"My need to sleep early is conflicting with my desire to finish this interesting book. "

"The unexpected phone call late at night unsettled me. "

"The rich sound of the cello included noticeable overtones, creating a warmer, fuller sound than a simple note. "

"The violinist was a master of her instrument."

"They had a bit of a disagreement about what color to paint the bedroom, but they have reached a compromise."

"The school's political represented the students' concerns to the principal. "

"to enter an agreement;  the UK and US negotiators nearing agreement;  he nodded his agreement."

"The complicated instructions on the new software difficult me from completing the project on time. "

"The student intentionally missed the first few days of school to avoid the difficult math test. "