Sandra Nallely Alanís Cruz was born on April 1st in Ciudad Nezahualcóyotl, State of Mexico. She holds a degree in Economics from the National Polytechnic Institute.

She began her musical training in 2004 as a violinist in the Nezahualcóyotl Children's Symphony Orchestra, where she achieved prominent positions. She participated in various festivals such as the Cervantino Itinerante, the Festival de las Almas, and the Festival de la Iluminaria.

Since 2009 she has worked as a violin instructor, developing projects in Puebla and Michoacán, and collaborating in the formation of various children's orchestras in Mexico.

She has participated in international events, such as the International Youth Orchestra in Leesburg, and in the "My Mexican Homeland" tour directed by Alondra de la Parra.

Since 2015 she has worked as a violin and viola instructor in the Nezahualcóyotl Children's Symphony Orchestra, training girls, boys and young people at basic and intermediate levels.