Toronto folk artist Megan Hamilton opens for Marcus Rubio and San Antonio favorite Buttercup for their joint CD release party at Limelight. Hamilton is a contributing founder of Familiar Music, a music label owned and operated by working musicians. Intriguing lyrics and original sounds complement her strong stage presence, making for a great opening set. $5, 10pm, Limelight, 9pm N. St. Mary’s. Meganhamiltonmusic.com.