There are several artists/bands called Alexa:

1.) AleXa (알렉사, also known as Alex Christine) is an American singer based in South Korea. She made her debut on October 21, 2019 with the single “Bomb”.

2.) [[b]Alexa is a rock band from Indonesia. Found on 2007, the band has one album, released on June, 2009 under Warner Music records.

3.) Alexa (aka Olga Fesenco) (born January 3, 1988) is a Moldovan pop artist that has taken several times part in the Moldovan national final of the Eurovision Song Contest.