I have sheet music - I can see I have to sing the note on the bottom line of the bass clef - Google tells me this is a G - I can find a virtual piano online with a G on it and press it to hear what the sound is - but is there any quicker way of doing this? Is there something, somewhere, that lets me see the notes on the bass clef and press one to hear what it sounds like, without knowing it's a G or having a piano? Or is that not possible for some reason I don't understand due to not having a clue about music?