ton·al 
/ˈtoʊnl̟/ adjective
/ˈtoʊnl̟/ adjective 1 technical : of or relating to musical or color tones
▪ tonal variations 2 music : having or based in a particular key
▪ traditional tonal music — opposite atonal
▪ tonal variations
▪ traditional tonal music — opposite atonal
— to·nal·i·ty /toʊˈnæləti/ noun, plural to·nal·i·ties [count, noncount]
▪ the tonality of a piece of music
/toʊˈnæləti/ noun, plural to·nal·i·ties [count, noncount] ▪ the tonality of a piece of music
— ton·al·ly adverb
