Dianelys Alfonso sits during the interview in Havana, Cuba. AP

Dianelys Alfonso has a bold presence — brightly coloured tattoos, spandex bodysuits, Technicolour hair — and a clarion voice that won her the label "Goddess of Cuba" for her turns on songs ranging from ballads to reggaeton.

Now she's also the centre of a new phenomenon in Cuba after publicly accusing another renowned musician, flutist and bandleader José Luis Cortés, of repeatedly assaulting and raping her during their years-long relationship while she was a vocalist for NG La Banda, one of the best-known Cuban bands of the last three decades.

Since Alfonso's accusations against Cortés on an Internet video programme last month, many Cubans have declared their support for her online, calling her the pioneer of the #MeToo movement in a country where open discussion of violence against women is rare.

Cortés has not publicly responded to the allegations or to messages seeking comment left by The Associated Press on his band's social media accounts or with his promoters.

#YouAreNotAlone

Within hours of speaking to video host Alex Otaola and alleging that she had been abused by Cortés, hundreds of Cubans on the island and in its diaspora in the United States, Latin America and Europe began posting messages of support for Alfonso with the hashtags #IBelieveYouGoddess, #MeTooInCuba and #YouAreNotAlone.

Alfonso also has received reams of abusive messages calling her a liar and accusing her of besmirching Cortés' reputation to win greater renown.

"I look at everything happening online and I'm really stunned," the 38-year-old singer told The Associated Press. "I can't really understand what's happening online. I'm just trying to keep getting professional psychological help to deal with everything that's come at me for having told the truth."

Dianelys Alfonso's lawyer Deyni Terry speaks during the interview in Havana. AP

Online activism of any kind is relatively new to Cuba, which only began permitting mobile internet this year. Until recently, open discussion of domestic abuse also has been rare in a communist society where the government portrays itself as able to take care of every social problem and where there are only a handful of non-governmental women's rights groups.

The government last year organised a publicity campaign to raise consciousness of domestic violence, with posters and announcements in official media under the slogans "You Are More" and "Evolve," though that appeared to focus more on physical than sexual abuse.

Some 500 Cuban artists and intellectuals have signed an open letter of support for Alfonso that condemns violence against women on a Facebook page titled, "I Believe You."

Actress and producer Violeta Rodríguez, daughter of Cuban singer Silvio Rodríguez, wrote on her Facebook page last month that she had been abused by a "famous and powerful" Cuban man but had remained silent for years. The post was later deleted, without explanation.

Alfonso was lead singer for NG La Banda from 2003 to 2009, and was involved romantically with Cortés for much of that time. She said Cortés repeatedly hit her, raped her and verbally abused her, in private and in public, during their relationship and after it ended. She said the abuse finally stopped after she left the group in the middle of an Italian tour in 2009 and did not return to Cuba until 2014.

Alfonso's lawyer, Deyni Terry, said Cortés sent the singer a threatening text message after she went public with the accusations. Alfonso reported the threat to police, Terry said, adding that she and her client were investigating whether they can bring charges of abuse and sexual assault against Cortés so many years after the alleged crimes took place.

"Many victims wait years to say what happened and that complicates judicial action, especially in Cuba where many laws are outdated," the lawyer said.

Associated Press