Beyoncé Knowles [1] and Jay Z spread positive vibes via their t-shirts while leaving a music studio in NYC on Monday. The couple smiled while exiting the building, with Beyoncé sporting jeans and a tank top [2] that read "Never Forget to Say Thank You" and Jay Z behind her in a black tee emblazoned with "Peace." Beyoncé and Jay Z returned home to the Big Apple after attending Prince's Rally 4 Peace concert in Baltimore [3] on Sunday night. The legendary artist performed for a crowd of thousands in order to promote peace in the aftermath of the riots and protesting [4] that occurred in the city after the death of Freddie Gray, who died in police custody last month. While at the concert, Jay Z and Beyoncé met with the late 25-year-old's family members [5] and also posed for a photo with Lesley McFadden [6], the mother of Michael Brown, who was gunned down by a police officer in Ferguson, MO, last August. There was no official press allowed at the event, but Prince's performance was streamed to Jay Z and Beyoncé's music service, Tidal, that evening. Keep reading to see the couple's latest low-key outing, then check out the adorable photo that Beyoncé shared of her Mother's Day gift [7] from daughter Blue Ivy.