Is it possible to add "hidden" track using AlphaTex?

[bali182]

I'm generating some basslines using AlphaTex. When they played I'd like to put a chord progression underneath them, but the chords are not really relevant to show as tabs, so I would like to keep the chord-tabs invisible.

So in a simplified way, is it possible to do something like this, and if so, what are the right APIs?

const api = new AlphaTabApi(dom, config)
const basslineTex = `...`
const guitarChordTex = `...`

api.tex(basslineTex)
api.tex(guitarChordTex, 'invisible') // Question is how?

api.render() // Render only the bassline

buttonDom.addEventListener('click', () => api.playPause()) // Play guitar part too

Thanks for any info!

[Danielku15]

Yes this is possible the data model holding the song information can have many tracks and they will be played all (unless muted explicitly through APIs). And separately you can tell alphaTab which tracks to render.

With the tex method you set the overall song with all tracks.

• Refer to these docs how to create multiple "tracks" with alphaTab: https://alphatab.net/docs/alphatex/tracks-staves
• And these docs explain that the second parameter can be used to specify which tracks should be used: https://alphatab.net/docs/reference/api/tex/

In your case you would do simply

const api = new AlphaTabApi(dom, config)
const basslineTex = `\\track "Bass Line" 1.1 2.1 3.1 4.1`
const guitarChordTex = `\\track "Guitar Line" 1.1 2.1 3.1 4.1`

api.tex(basslineTex + " " + guitarChordTex, [ 0 ] ) 
// After 10 secs switch to guitar (just for demo)
setTimeout(() => {
    api.renderScore(api.score, [ 1 ]);
}, 10000);

[bali182]

Fantastic, thank you very much!