[1] Her career in musical theatre continued, as she played Janet in The Rocky Horror Show, Young Sally in Follies in Concert, Jenny in Aspects of Love, and Mila in Aloha Kamano by Sean Purcell.

On her return to Ireland she played the role of Kate Foley in The Wireman in the Gaiety Theatre, Dublin.

In 2014 she released her first solo album "Be Still My Soul" produced by Andrew Holdsworth, which is a collection of hymnal and Easy listening classical songs.

In early 2015 it was announced that she would rejoin Celtic Woman for two months (May and June) of their Tenth Anniversary tour.

[citation needed] In 2018 Homecoming – Live from Ireland Tour, Alex Sharpe joined the group Celtic Woman as a temporarily fill in for Susan McFadden who was home for two weeks due to the death of her aunt.

The all Irish trio initially included Lynn Hilary and Edel Chan Murphy, both former singers of Celtic Woman and Riverdance.

In 2017 Sharpe provided the vocal, in modern Irish Gaelic, for the traditional hymn Be Thou My Vision on Camille Nelson's, mainly instrumental, album "Lead Me Home."

[14][15] In 2019 Sharpe again collaborated with Nelson on a cover of the Oscar winning Song into the West from Lord of the Rings: Return of the King.

When asked where she developed her musical talent, she has said that "my granddad was a great one for singing songs and banging out tunes on the piano.